| 单词 | home range |
| 例句 | First, herds of many species don’t have overlapping home ranges but instead maintain exclusive territories against other herds. Guns, Germs, and Steel: The Fates of Human Societies 1997-03-01T00:00:00Z But leopards are territorial, and he would have had to battle with at least one other male before he could carve out a home range for himself. My Life with the Chimpanzees 1988-03-01T00:00:00Z However, having only a big patch of restored forest in an area of farmland may isolate species that have a large home range. Coffee, brought to you by bees: How restoring habitat is a win-win for forests and farmers alike 2023-05-24T04:00:00Z Well, it's not just that they've proved their worth as readily acceptable white hats over the generations; it's that they're capable of fulfilling this function beyond their home range. Cowboys & Aliens: the only politically correct face-off? 2011-08-22T09:46:08Z And in recent decades, rebounding populations of sea otters and harbor seals have returned to their old home range in the thousands. Wolves hunt sea otters and seals, a startling find 2023-11-14T05:00:00Z He then made a huge loop around the peninsula, walking 680 miles to find a new home range, only to end up about 30 miles from where he started. Can WA’s Olympic Peninsula cougars coexist with human development? 2023-10-01T04:00:00Z Cougars shrunk their home ranges as wolves expanded in the park, selecting areas that were craggier, steeper, and more densely forested. Cougars are ambushing and killing wolves—and no one knows why 2023-08-25T04:00:00Z It also correlates with biologically important features such as metabolic rate, growth rate, nest clutch size, longevity and home range size. How Sauropod Dinosaurs Became the Biggest Land Animals Again and Again 2023-08-15T04:00:00Z Each successful transplant has its own story: some are benign, others a threat to the local wildlife; some are abundant in their home ranges, whereas others rely on cities as a refuge from extinction. Parrots Are Taking Over the World 2023-06-20T04:00:00Z However, dehorned animals’ home ranges shrank by an average of 45.5 percent, with a few rhinos losing up to 80 percent of their territory. Rhinos’ Horns Were Cut to Thwart Poachers. After, They Didn’t Go Out Much. 2023-06-12T04:00:00Z “It has a tiny home range,” Lee says. World’s largest freshwater fish draws attention to delicate ecosystem 2023-05-30T04:00:00Z He prowled farther from his home range in Griffith Park into the surrounding human territory. The Lion Sleeps Tonight: P-22, Elusive L.A. Menace, Is Captured 2022-12-12T05:00:00Z Given their huge home ranges, diverse diets, sensitivity to roads and varied habitats, grizzly bears are indicators of healthy, resilient landscapes. Support reintroducing grizzly bears to the North Cascades 2022-11-29T05:00:00Z Like the Monk Parakeet, this species is successful in its native home ranges in South Asia and sub-Saharan Africa, where it can thrive in human-altered habitats. Parrots Are Taking Over the World 2023-06-20T04:00:00Z It allowed our predecessors to expand their home ranges and diversify their diets, and it transformed the way we give birth and parent our children. Fossils Upend Conventional Wisdom about Evolution of Human Bipedalism 2022-11-05T04:00:00Z Because bears can have more than a 2,000-mile home range, moving those who start getting too close to humans to a remote location is “generally not successful” in the long term, he said. Woodland Park Zoo welcomes second bear cub — an orphan from Montana 2022-10-14T04:00:00Z Her home range was “entirely” within the burn area, the park service said. P-65 is first mountain lion in Santa Monica Mountains to die of mange, study shows 2022-09-26T04:00:00Z The critical size depends, in part, on the home range that is characteristic of the species. Biology for AP Courses 2022-06-09T00:00:00Z White rhinos, among the largest land mammals, have suffered in recent years as poaching has increased across their home range, primarily across southern Africa. Cuba zookeepers celebrate birth of rare baby white rhino 2022-06-25T04:00:00Z Breeding season is over, the pups are out of the den and the dogs are roaming across their 116-square-mile home range with predatory brio. The Incredible Journey of Three African Wild Dogs 2022-06-20T04:00:00Z The largest member of the cat family in the state, males can weigh up to 180 pounds and travel a home range as large as 150 square miles. Girl hospitalized after cougar attack in Eastern Washington 2022-05-29T04:00:00Z The animals need immense expanses of wildland to survive, with home ranges for adult male wolverines covering as much as 610 square miles, according to a study in central Idaho. Judge orders U.S. to decide whether wolverines need protection 2022-05-27T04:00:00Z Relocating the fox that was caught, Baker-Masson said, “could have jeopardized his wellbeing and/or the foxes already using that home range.” National Zoo defends euthanizing fox, citing ‘ongoing’ flamingo danger 2022-05-19T04:00:00Z Their home range can be large, with the birds fanning out over hundreds of miles when food is scarce. Protections sought for Western bird linked to piñon forests 2022-04-26T04:00:00Z As she wrote in her paper: “Individuals that scored higher for all four personality traits had more perches in both their home ranges and core areas compared to individuals with lower personality scores.” Perspective | Squirrels, they’re just like us: They have personalities 2022-04-10T04:00:00Z That data showed females tended to set up what's called a home range adjacent to or overlapping with their mother's, while males left their mother's territory almost as soon as they became independent. How the Hoopa Valley Tribe monitors a rare carnivore 2022-04-03T04:00:00Z Jaguars, for example, occupy territories as small as 25 square kilometers, whereas mountain lions have home ranges that stretch to 250 square kilometers, or about four times the size of Manhattan. Zoo cats may have weaker bones than their wild cousins 2022-03-29T04:00:00Z Other factors, including a male’s age or the size of his home range, did not predict paternity success, the researchers report today in Current Biology. Dolphins whistle to keep in touch with distant friends 2022-03-24T04:00:00Z It’s possible it could eventually return to its home range, but now it appears comfortable in Maine, Hitchcox said. Rare Steller’s sea eagle travels far from home to Maine coast 2022-01-29T05:00:00Z It’s possible it could eventually return to its home range, but for now it’s comfortable in Maine, Hitchcox said. Rare eagle seen in Maine, wowing birders, might stay a bit 2022-01-25T05:00:00Z Driven by fierce winds, the blaze pushed into the Caribou Wilderness in early August, and the area around Tule’s den burned — as did most of her home range. Rare Sierra Nevada red foxes survive massive Dixie fire that burned habitat 2021-11-15T05:00:00Z There is only one other known sighting of a beluga outside of its home range in the Pacific, oddly also near Point Defiance. A beluga whale in Puget Sound? Rare visitor startles boaters in first sighting here since 1940 2021-10-06T04:00:00Z The home ranges of Indigenous peoples currently shelter 80 percent of Earth's remaining biodiversity and sequester almost 300 trillion tons of carbon. Biodiversity’s Greatest Protectors Need Protection 2021-10-05T04:00:00Z They occupy small home ranges of just a few square feet for life, seldom leaving as long as there is food around. Recovery effort aims to restore pinto abalone mollusks that once flourished in Salish Sea 2021-09-14T04:00:00Z The state agency works collaboratively with federal wildlife officials to monitor grizzly bear survival, reproduction, home range use, food habits, genetics and causes of death. 1st female grizzly in 40 years collared in Washington state 2021-07-15T04:00:00Z Translocation occurs when animals are moved to areas that are not within their home range, whereas relocation describes moving animals to another area within their home range. A mission to rescue 469 doomed trout at the Arroyo Seco fans Pasadena water war 2021-06-16T04:00:00Z Wolves are highly territorial, defending a pack territory or home range from 200 to 500 square miles; 350 square miles is average in Washington. All about wolves: Where they come from, how long they live and more 2021-05-23T04:00:00Z The home ranges of the chimpanzee-like apes overlap considerably, and the bonobo troops meet and mingle frequently, grooming one another, traveling and foraging together, and pausing often for mutual pelvic rubdowns. Meet the Other Social Influencers of the Animal Kingdom 2021-05-07T04:00:00Z Because turtles are slow-moving animals and their home range is small, Riley said, “the chances are that the shooter or shooters were close to where the turtles were found.” Two snapping turtles rescued after being shot in Virginia 2021-04-16T04:00:00Z They added fishing-catch data for each square along with the species’ reproductive rates and growth rates, home ranges and movement. Looking for Climate Solutions? Protect More Ocean, Researchers Find. 2021-03-17T04:00:00Z The average cost of installing solar panels on a 1,500-square-foot home ranges from $7,140 to $8,925, according to homeguide.com, a consumer website that estimates the cost of home improvement and construction projects. From the streets to solar advocate: D.C. activist pushes for renewable power 2021-02-17T05:00:00Z A single breeding pair requires between 10,000 and 27,000 acres for its home range, as well as tall trees for nesting. This country is where you can find some of the world’s rarest animals 2021-01-28T05:00:00Z Nekaris witnessed the animals grow in confidence, she says, “because they’re in the air. They’ve increased their home range sizes, and the areas within the home ranges that they can use.” Bridge over troubled forests: how Java's slow lorises are creeping back 2020-10-13T04:00:00Z "The finding on Block Island is notable because this tick is not known to exist outside of its home range," state officials said. Two exotic tick species found in Rhode Island for the first time, officials say 2020-09-29T04:00:00Z The southern residents have recently returned to their summer home range of the San Juan Islands for several weeks. Orca Tahlequah is a mother again 2020-09-05T04:00:00Z One group will be moved to a new site within their home range, a second group will be relocated outside of their home range, and a third group will remain in place. Students study relocating rattlesnakes away from humans 2020-06-27T04:00:00Z “Small home ranges equals a lot of food.” The cat's whiskers: new way of counting lions could boost conservation efforts 2020-06-20T04:00:00Z Last winter, for example, the Huckleberry Pack displaced the Pinnacle Peak Pack from their longtime home range on the refuge. Wolf headaches persist for ranchers in elk-rich Jackson Hole 2020-06-07T04:00:00Z The cool thing is that animal home ranges are governed by their own needs and often do not follow the lines of human fences and alleyways. Keeping tabs on neighborhood wildlife may hook you on all the action 2020-05-22T04:00:00Z More concerning, he said, are the new roads being built across panther home ranges, often after the areas are sold to housing developers. Orphaned panther kittens thriving at wildlife refuge 2020-02-09T05:00:00Z The idea is to see how well the snakes adapt to the relocation and determine whether they will attempt to return to their home range. Students study relocating rattlesnakes away from humans 2020-06-27T04:00:00Z “Bears may change their home range, they may change their movement pattern, they may avoid certain areas. They may become nocturnal, or females with cubs might avoid those areas.” When Biking and Bears Don’t Mix 2019-10-07T04:00:00Z A morning drive to Bellevue averages 60 to 65 minutes, while a peak commute home ranges from 69 to 72 minutes, according to September 2018 data from INRIX, a transportation data and navigation company. Washington’s unofficial freeway: Highway 9 in Lake Stevens strains under a suburban boom 2019-09-03T04:00:00Z In this, the first year of the project, researchers are learning the rattlers’ home ranges. Researchers try to keep people and WV timber rattlers apart 2019-08-31T04:00:00Z The cats established territories in the paddock, home ranges that they would scout regularly, loping out on forays to the farthest edges while keeping their hunting grounds to small areas that would periodically change. Australia Is Deadly Serious About Killing Millions of Cats 2019-04-25T04:00:00Z That’s because the southern residents need salmon year-round, throughout their home range. HUNGER: The decline of salmon adds to the struggle of Puget Sound’s orcas 2019-02-24T05:00:00Z In just a decade, the number of black-winged myna birds found in the species’ home range in Indonesia has declined by more than 80%. It can take a decade for species endangered by wildlife trade to get protection 2019-02-14T05:00:00Z Every male requires around eighty square miles of home range—an area three and a half times the size of Manhattan. Peter Matthiessen’s “The Snow Leopard” in the Age of Climate Change 2018-12-30T05:00:00Z “One group will be moved within their home ranges, one will be moved outside their home ranges, and the control group won’t be moved at all,” Oxenrider said. Researchers try to keep people and WV timber rattlers apart 2019-08-31T04:00:00Z They are wary of new things and have extreme environmental awareness that extends beyond their home range. Australia Is Deadly Serious About Killing Millions of Cats 2019-04-25T04:00:00Z Their home ranges all burned, Kuykendall said, and whether they survived remains unknown. Fate of famed L.A. mountain lions unclear after wildfire scorched their habitat 2018-11-14T05:00:00Z “It was an extremely dry year out here, especially on our home range. There’s basically no grass,” said Seth Jones, a rancher based in Box Elder County’s Park Valley. Cows help battle invasive grass at Great Salt Lake wetlands 2018-10-12T04:00:00Z “A deer biologist would maybe focus on one small area because deer have small home ranges,” Whitaker said. Louisiana biologist ventured to Arctic Circle to band geese 2018-09-28T04:00:00Z Others, including many tarantula species, are restricted because they’re becoming rare in their home ranges. Thieves stole 7,000 creepy insects and spiders from a museum. But why? 2018-09-11T04:00:00Z This was most likely due to ongoing logging outside of their protected nesting areas in the owls’ much larger year-round home ranges. Many native animals and birds thrive in burned forests, research shows 2018-08-26T04:00:00Z “Trapped crocodiles can’t be relocated to their natural habitat due to costs and because they can travel large distances to return to their home range.” Captured: A 1,300-pound crocodile that evaded rangers in Australia for years 2018-07-10T04:00:00Z Researchers who looked at the home ranges of more than 4,000 threatened birds, mammals and amphibians worldwide for a 2014 study found that protected areas miss 85 percent of them. Opinion | Selling the Protected Area Myth 2018-06-09T04:00:00Z “Data from recently released bighorn sheep and mule deer indicate that the area is used extensively as both a movement corridor and is home range for both species,” Tarrant said. 2 proposals in could expand public lands, habitat in Texas 2018-04-24T04:00:00Z She notes it is important to collect more genetic data to verify the otters’ home ranges and validate the approach. Otter Poop Helps Scientists Track Pollution at a Superfund Site 2018-04-18T04:00:00Z Poisonings and unregulated hunting obliterated nearly all of these majestic canines from Canada to Mexico, their original home range. ‘Rewilding’ Missing Carnivores May Help Restore Some Landscapes 2018-03-16T04:00:00Z If she returns to the Rogue Pack, her GPS collar will again allow biologists to follow the pack’s whereabouts in its normal home range in eastern Jackson and western Klamath counties. No luck finding mate, daughter of wolf OR-7 returns home 2018-02-28T05:00:00Z If she returns to the Rogue Pack, her GPS collar will again allow biologists to follow the pack’s whereabouts in its normal home range in eastern Jackson and western Klamath counties. No luck finding mater, daughter of wolf OR-7 returns home 2018-02-28T05:00:00Z P-41’s remains were found a few weeks after the La Tuna fire burned across his home range. Rat poison found in remains of mountain lion P-41, but cause of death still unknown 2017-12-19T05:00:00Z The frenzy sees all the world’s adult corvinas gathered in less than 1% of their usual home range for a few weeks. Loud orgies of Mexican fish could deafen dolphins, say scientists 2017-12-19T05:00:00Z Tigers are particularly vulnerable to habitat fragmentation because they require expansive territories for hunting.The researchers estimated the Sumatran tiger’s home range to be about 150 miles, which is large even by tiger standards. Sometimes Seeing More Endangered Tigers Isn’t a Good Sign 2017-12-05T05:00:00Z And while we know plenty of places were dinosaurs died, where those animals actually lived – as in their home ranges and preferred habitats – is often only known in outline. See Food Diet 2017-10-21T04:00:00Z What this study did not address was whether someone’s home range reflects their personality traits or imposes them. Birds choose where to live based on their personalities 2017-10-05T04:00:00Z North Dakota’s Game and Fish Department says this is the time of year when young deer are dispersing from their home ranges. Deer-vehicle collisions more likely in the Dakotas 2017-10-05T04:00:00Z Emily Mitchell hopes to compile information on a number of issues, including home range and diseases, The Black Hills Pioneer reported . South Dakota graduate student conducts fox study 2017-08-20T04:00:00Z Their home ranges spanned the globe, and there was a diversity of age. Perspective | Let’s hear it for the Smithsonian’s squirrel expert — and for the scientific method 2017-06-05T04:00:00Z “Grizzly bears technically don’t migrate, but do move to seasonally available food sources within their home ranges,” says Clayton Lamb, a wildlife ecology graduate student at the University of Alberta. Highways Could Help Bears and Butterflies 2017-05-29T04:00:00Z The panthers’ home ranges often overlap, but they don’t like getting too close to each other. The Return of the Florida Panther 2017-05-29T04:00:00Z “Killing is what wolves do,” he said, adding that even with reduced numbers, “they aren’t going to quit their home range.” The New Threat to Wolves in and Around Yellowstone 2017-05-01T04:00:00Z In Israel, red foxes live longer and use smaller home ranges when they rely on a diet of leftovers. Are some wolves being ‘redomesticated’ into dogs? 2017-04-05T04:00:00Z The park is eight square miles, but for P-22 it’s a Hong Kong microflat—the smallest known home range for an adult male mountain lion. Lions of Los Angeles 2017-02-05T05:00:00Z “Shamshy itself is too small to be a full home range for a snow leopard, but it can certainly be a part of one, or even several,” said Sharma. Once a trophy hunting concession, now a snow leopard sanctuary 2017-01-10T05:00:00Z As the panthers have begun to multiply, they’ve been forced to search for new home ranges. The Return of the Florida Panther 2017-05-29T04:00:00Z Despite the fact that the collared cattle spent the equivalent of nearly 15 years in the home ranges of GPS collared badgers, the two species were never found in close proximity. Badgers may not spread TB to cattle through direct contact - BBC News 2016-08-04T04:00:00Z But Kathrens said most Americans want to see mustangs “roam freely on their native home ranges as intended.” Agency to sterilize mustangs for first time to slow growth 2016-06-26T04:00:00Z Grizzly 679, a lumbering boar with a home range that stretches all the way to the Madison River, had been paralleling Pilgrim Creek Road, to the delight of a few dozen early-season bear watchers. Teton park Wildlife Brigade keeps people, griz safely apart 2016-06-01T04:00:00Z Female grizzlies tend not to stray far from their home ranges, and male polar bears don’t usually creep into grizzly habitats. Love in the time of climate change: Grizzlies and polar bears are now mating 2016-05-23T04:00:00Z A 14-year-old female koala named Killarney went missing on March 3 from the Los Angeles Zoo, which is located inside Griffith Park, a sprawling, urban preserve that is part of the mountain lion's home range. Famous L.A. Cougar May Have Killed Koala 2016-03-10T05:00:00Z And as climate change pushes more species out of their home ranges and into new areas, the number of so-called invaders is likely to multiply exponentially. Invasive Species Aren’t Always Unwanted 2016-02-29T05:00:00Z They argue that removing elephants from their home ranges is unethical. U.S. Says Yes to Importing 18 Elephants From Swaziland 2016-01-22T05:00:00Z And three other koalas that lived slightly further from the festival also moved away from the music, but stayed within their home range. Byron Bay Bluesfest noise has destroyed local koala population, says ecologist 2016-01-19T05:00:00Z An adult male’s home range can extend over 500 square kilometers. Santa Monica's Mountain Lions Are Stuck on an Island, and Fast Disappearing 2015-11-23T05:00:00Z Wildlife officials say this is the time of year when young deer are dispersing from their home ranges. North Dakota drivers reminded to be on the lookout for deer 2015-10-12T04:00:00Z Juveniles disperse from their mothers’ home range, and everyone moves in response to bamboo die-offs after flowering events, with reports of six-mile treks over alpine mountains. Five myths about pandas 2015-08-28T04:00:00Z The exceptions were two female bears with cubs that ran from the drone, forcing one family to enter another bear's home range. How Drones Are Affecting Wildlife in Surprising Ways 2015-08-25T04:00:00Z Of the seven koalas tracked with radio collars, the three that resided within 525 metres of the stage moved outside of their usual home range – something koalas tend not to do. Byron Bay Bluesfest noise has destroyed local koala population, says ecologist 2016-01-19T05:00:00Z Leading up to state, Ketchikan competes in virtual shoots: Athletes shoot at their home ranges, and the official scores are compiled by the state SCTP. Ketchikan teen trap shooter takes state 2015-08-01T04:00:00Z Unlike migratory birds and sea turtles -- which seemingly use their magnetic senses to migrate thousands of miles -- the average wood mouse lives in a home range about 500 feet across. Mouse Senses Magnetic Fields Possibly via Quantum Processes 2015-06-24T04:00:00Z More is at stake than the fate of a single showy bird, whose home range coincides with the heartland of American agriculture and the epicenter of an energy boom. Feature: Researchers push to prevent a last dance for the lesser prairie chicken 2015-06-18T04:00:00Z Taking all these factors into account, buying a home ranges from being 16% cheaper than renting in Honolulu to being 55% cheaper in Sarasota, FL. Where HOA Fees Make Renting Cheaper Than Buying A Home 2015-05-19T04:00:00Z The tracking expands biologists’ understanding of the wolves’ home range, which is used to estimate the population. Denali National Park wolf count drops below 50 2015-04-28T04:00:00Z The average home range for a male is typically about 200 square miles. P-22 GPS data show mountain lion left Los Feliz soon after media hoopla 2015-04-17T04:00:00Z Kanta said the information revealed by actively tracking South Dakota’s mountain lion population revealed a wealth of data to include home range size, dispersal patterns, actions taken when people were in the vicinity, and more. South Dakota moves to DNA to track mountain lion population 2015-02-08T05:00:00Z Siamangs are a specifies of gibbon from southeast Asia, while lemurs’ home range is in Madagascar. Lemurs seriously hurt in attack by gibbon at Albuquerque zoo 2015-01-09T05:00:00Z Dr. Carter, of Queensland, and her colleagues followed more than 400 giraffes for six years, identifying their home ranges and who associated with whom. Our Understanding of Giraffes Does Not Measure Up 2014-10-05T04:00:00Z Males located their home ranges to overlap with females and females based their ranges on food availability, Elbroch said. Research shows Wyoming cougars can be sociable 2014-09-04T04:00:00Z Dam removal also is kick-starting broader effects in the ecological systems of the watershed, from its food chain to the home ranges of animals. Back to nature: Last chunk of Elwha dams out in September 2014-08-16T04:00:00Z We are answering some basic ecology questions: the home range size and how big a group they live in; what is their mortality rate? Tracking jaguars in Belize and coyotes in Virginia by camera and scat An eagle tagged near Flagstaff, Arizona, left its nest and flew 250 miles to a new home range in the San Juan Mountains. Monument eagles fitted with transmitters 2014-06-07T04:00:00Z Wildlife biologists call the space a wild animal uses its home range or its territory. Zoos of the Future Break Down the Enclosure Walls 2014-05-14T04:00:00Z Males, once weaned, disperse a greater distance while weaned females may remain in the same home range as their mother. Research shows Wyoming cougars can be sociable 2014-09-04T04:00:00Z "We were expecting the snakes to display wandering movements but then develop home ranges closer to where we released them." Burmese Pythons in the Everglades Display Unusual Navigational Abilities 2014-03-19T21:21:00Z According to their records, Fleet was born in Brighton and his home range was a few neighbouring streets. Fox's record-breaking country walk 2014-01-21T00:06:39Z Most animals move within a home range; the size of which is driven by avoiding predators, finding food and reproducing. Reef fish settle down as they grow up 2013-10-30T07:58:08Z Wolves roam huge home ranges, making it difficult for conservationists to track them visually. Scientists crack wolves' howling code 2013-07-22T01:19:15Z Although lions are increasingly imperiled in their home ranges, many Americans are unaware of the species’s plight. Lion Meat Tacos (You Read That Right) Are the Latest Threat to Conservation 2013-05-28T22:45:03.247Z "And carnivores move across huge areas—grizzly bears, mountain lions and wolverines can have home ranges of several hundred square miles, which gives them a high probability of crossing roads." Rise in Roadkill Requires New Solutions 2013-05-16T10:15:00.360Z Moreover, accumulated droppings from any single species, giant anteater or jaguar, yield the most prized data of all for rarities—density, home range, and population size. Can Endangered Animals Coexist with Big Ag? [Excerpt] 2013-02-22T19:15:00.507Z "What we found was that really small parrotfish expand their home range very quickly as soon as they settle on the reef," Mr Welsh told BBC Nature. Reef fish settle down as they grow up 2013-10-30T07:58:08Z He added: "With just nine individuals and a home range stretching from the Outer Hebrides to Galway on the west of Ireland, to find them at all is simply astounding." 'Extinction threat' for UK orcas 2013-01-09T11:38:24Z There are about 50 wolves in the six wolf packs whose home ranges include parts of Grand Teton. More Radio-Collared Wolves in Wyoming Shot Dead 2012-12-17T16:25:00Z The researchers followed 12 relocated male elephants and compared them with 12 male elephants left in their home ranges. Elephant Relocation Scheme Fails to Prevent Deaths 2012-12-12T01:15:00.297Z To meet their dietary demands, maned wolves traditionally forage across large home ranges of about 70 square kilometers, thus contributing to their natural rarity. Can Endangered Animals Coexist with Big Ag? [Excerpt] 2013-02-22T19:15:00.507Z "In many studies which look at coral reef fish movements, we see a significant relationship reported between body size and home range," explained lead researcher Justin Welsh from James Cook University, Australia. Reef fish settle down as they grow up 2013-10-30T07:58:08Z All dramatically increased the size of their home ranges: the areas that they live and travel in. Relocating Elephants Backfires 2012-12-07T22:00:00Z On average, they move about six miles during the following eight months, before settling into a new home range. Wild pigs may become Washington’s next big pest 2012-11-12T21:31:30Z The male home ranges contained an average of three females and the females usually appeared within the home range of more than one male. Sloths' 'lazy' sex life revealed 2012-07-24T06:29:32Z As the creatures roamed their home ranges, the collars recorded their location every 2 hours and relayed that info to the scientists once every 2 to 5 days. Pumas Leave Table Scraps 2012-06-13T00:30:00Z Worse, the monkey requires a large amount of such forest as a home range to find enough fruits to eat. My Morning Cup of Coffee Kills Monkeys 2012-06-06T18:15:00.227Z Studies of the movements of mammals on a more detailed scale, perhaps by live-traps set at shorter intervals and moved frequently, are needed to increase our understanding of home range. A Population Study of the Prairie Vole (Microtus ochrogaster) in Northeastern Kansas 2012-04-08T02:00:23.123Z Red wolves tend to hold, on average, territories that outsize coyote home ranges. Night-Hunting Coyotes in N.C. Risky for Red Wolves 2012-03-28T11:45:03.783Z In calculating home range, it was assumed that animals would venture half-way from the peripheral stations, at which they were caught, to the next station outside the range. Comparative Ecology of Pinyon Mice and Deer Mice in Mesa Verde National Park, Colorado 2012-02-24T03:00:32.243Z For females, there is very little overlap between home ranges except for the late spring and early summer, as females try to expand their territories. 7 Things You Didn't Know About Groundhogs 2012-02-02T13:45:00.207Z They were all the more baffled to find the Miller's Grizzled Langur—its black face framed by a fluffy, Dracula-esque white collar—in an area well outside its previously recorded home range. Monkey Long Believed Extinct Found in Indonesia 2012-01-20T14:19:00Z The effect of these different spacings on the size of the seeming home range was also investigated. A Population Study of the Prairie Vole (Microtus ochrogaster) in Northeastern Kansas 2012-04-08T02:00:23.123Z Most of the home ranges for these small mammals are not well known, but are thought to be less than 50 meters. Scientist at Work Blog: Plants That Attack, and a Well-Traveled Rat 2011-12-02T17:34:01Z Another "home range" was made in an oblong shape with rounded ends. Comparative Ecology of Pinyon Mice and Deer Mice in Mesa Verde National Park, Colorado 2012-02-24T03:00:32.243Z Turtles removed from their normal home ranges traveled farther per day than any other group. Natural History of the Ornate Box Turtle, Terrapene ornata ornata Agassiz 2011-10-01T02:00:30.200Z The young, being at first not conditioned to the bait, and also having relatively small home ranges, would generally be less well represented in the catch than would the adults. Aspects of Reproduction and Development in the Prairie Vole (Microtus ochrogaster) 2011-09-19T02:00:13.453Z Seasonal differences in the sizes of home ranges were not significant. A Population Study of the Prairie Vole (Microtus ochrogaster) in Northeastern Kansas 2012-04-08T02:00:23.123Z He says it eventually left its mother’s home range and started moving east. Mountain lion killed while trying to cross busy Los Angeles freeway 2011-09-01T04:42:14Z It is generally understood that the estimated home range of an animal tends to increase in size with each additional capture; this increase is rapid at first, then slows. Comparative Ecology of Pinyon Mice and Deer Mice in Mesa Verde National Park, Colorado 2012-02-24T03:00:32.243Z Of two turtles removed more than one-fourth of a mile from their home ranges, one homed and one did not. Natural History of the Ornate Box Turtle, Terrapene ornata ornata Agassiz 2011-10-01T02:00:30.200Z The average minimum area between the stations in these 29 home ranges was 11.5 acres. Ecology of the Opossum on a Natural Area in Northeastern Kansas 2011-08-26T02:00:22.450Z However, the voles caught in the winter often enough to be used for home range studies were too few for a thorough study of seasonal variation in the size of home ranges. A Population Study of the Prairie Vole (Microtus ochrogaster) in Northeastern Kansas 2012-04-08T02:00:23.123Z One night two of the three saddle horses stampeded and went back straight as the crow flies to their home range, so that we did not get them until on our return from the trip. Hunting in Many Lands The Book of the Boone and Crockett Club 2011-08-20T02:00:11.973Z Theoretically, the more often an animal is captured, the more reliable is the estimate of its home range. Comparative Ecology of Pinyon Mice and Deer Mice in Mesa Verde National Park, Colorado 2012-02-24T03:00:32.243Z Populations and home range relationships of the box turtle, Terrapene c. carolina. Natural History of the Ornate Box Turtle, Terrapene ornata ornata Agassiz 2011-10-01T02:00:30.200Z More often, an opossum follows no trail in its search for food, but seems to wander at random within its home range. Ecology of the Opossum on a Natural Area in Northeastern Kansas 2011-08-26T02:00:22.450Z Many voles shifted their home range and a few did so abruptly. A Population Study of the Prairie Vole (Microtus ochrogaster) in Northeastern Kansas 2012-04-08T02:00:23.123Z The ranchmen naturally wish to get their sheep off the home range as early in the spring as possible—in fact, the last month there is one of starvation. Hunting in Many Lands The Book of the Boone and Crockett Club 2011-08-20T02:00:11.973Z The investigator must decide how many captures are necessary before the data seem to be valid for estimating home ranges. Comparative Ecology of Pinyon Mice and Deer Mice in Mesa Verde National Park, Colorado 2012-02-24T03:00:32.243Z The average area of eight home ranges that were actually measured was five acres. Natural History of the Ornate Box Turtle, Terrapene ornata ornata Agassiz 2011-10-01T02:00:30.200Z Evidence of the existence and extent of home range was obtained for those opossums that were trapped on several or many occasions. Ecology of the Opossum on a Natural Area in Northeastern Kansas 2011-08-26T02:00:22.450Z That home ranges overlapped was demonstrated by frequent capture of two or more individuals together in the same trap. A Population Study of the Prairie Vole (Microtus ochrogaster) in Northeastern Kansas 2012-04-08T02:00:23.123Z Sternberg, who monitors the area's bobcat population using cameras and radio collars on around 20 bobcats, says that the border barriers bisected the home ranges of the tracked bobcats. U.S. Border Fence with Mexico Threatens Endangered Wildlife 2011-08-03T00:15:00.230Z The estimated home ranges of 10 individuals of P. truei, each caught from eight to 13 times, were plotted and measured after each capture from the fourth to the last. Comparative Ecology of Pinyon Mice and Deer Mice in Mesa Verde National Park, Colorado 2012-02-24T03:00:32.243Z Measurement of territory and home range size in birds. Natural History of the Ornate Box Turtle, Terrapene ornata ornata Agassiz 2011-10-01T02:00:30.200Z Limits of home ranges are not sharply defined and at any time the opossum may extend its range into new areas. Ecology of the Opossum on a Natural Area in Northeastern Kansas 2011-08-26T02:00:22.450Z Runway systems tended to merge, as described later in this report, and relationships between them and home range were not apparent. A Population Study of the Prairie Vole (Microtus ochrogaster) in Northeastern Kansas 2012-04-08T02:00:23.123Z “The cats are using immense home ranges,” ten or twenty times bigger than previous estimates. Basics: Peeking Inside a Forbidding Kingdom 2011-07-25T20:04:39Z Table 3 shows estimations of the home ranges of males and females of each species of Peromyscus. Comparative Ecology of Pinyon Mice and Deer Mice in Mesa Verde National Park, Colorado 2012-02-24T03:00:32.243Z Females ordinarily left their home ranges to nest. Natural History of the Ornate Box Turtle, Terrapene ornata ornata Agassiz 2011-10-01T02:00:30.200Z It may shift to a new den from which areas beyond its original home range are readily accessible, and may then occupy a new home range overlapping part of the old one. Ecology of the Opossum on a Natural Area in Northeastern Kansas 2011-08-26T02:00:22.450Z Only those voles captured at least four times were used for the home range studies. A Population Study of the Prairie Vole (Microtus ochrogaster) in Northeastern Kansas 2012-04-08T02:00:23.123Z "As the hybridisation between the two species occurred at a time when their home ranges overlapped, most likely during environmental stress, this has implications for polar bears in today's climate." Polar bears have Irish ancestors 2011-07-07T16:00:23Z Table 3 shows a comparison of home range calculations obtained for each species, when calculated by inclusive and exclusive boundary-strip methods. Comparative Ecology of Pinyon Mice and Deer Mice in Mesa Verde National Park, Colorado 2012-02-24T03:00:32.243Z Individual box turtles tended to remain in small areas for long periods; these areas were interpreted as home ranges. Natural History of the Ornate Box Turtle, Terrapene ornata ornata Agassiz 2011-10-01T02:00:30.200Z Or, it may make a relatively long shift, to an area entirely distinct from the original home range and well separated from it. Ecology of the Opossum on a Natural Area in Northeastern Kansas 2011-08-26T02:00:22.450Z A home range may include several runway systems, and the ranges of individuals overlap extensively. A Population Study of the Prairie Vole (Microtus ochrogaster) in Northeastern Kansas 2012-04-08T02:00:23.123Z The size of the bird's home range over the ocean also surprised the scientists. Gyrfalcons are 'secret seabirds' 2011-06-20T01:07:22Z The adjusted length of the range also can be used as an expression of home range. Comparative Ecology of Pinyon Mice and Deer Mice in Mesa Verde National Park, Colorado 2012-02-24T03:00:32.243Z She found the average home range of adults to be 350 feet in diameter. Natural History of the Ornate Box Turtle, Terrapene ornata ornata Agassiz 2011-10-01T02:00:30.200Z Many of the opossums trapped were probably at or near the edges of their home ranges which barely overlapped the study area; consequently the chances of recapturing them were poor. Ecology of the Opossum on a Natural Area in Northeastern Kansas 2011-08-26T02:00:22.450Z Both home ranges and patterns of runway systems change constantly. A Population Study of the Prairie Vole (Microtus ochrogaster) in Northeastern Kansas 2012-04-08T02:00:23.123Z “Raccoons maintain very small home ranges,” Dr. Beasley said, and they like to stay put. Basics: A Fast Life and Success That Starts in the Pouch 2011-06-13T23:34:26Z Data from animals caught less than four times, and hence not usable for calculations of home range, could be used in calculating the distance between captures on successive nights. Comparative Ecology of Pinyon Mice and Deer Mice in Mesa Verde National Park, Colorado 2012-02-24T03:00:32.243Z Some turtles concentrated their activities in only one part of the home range, moving subsequently to another part, and some turtles had two ranges between which they traveled at varying intervals. Natural History of the Ornate Box Turtle, Terrapene ornata ornata Agassiz 2011-10-01T02:00:30.200Z Tracking of opossums suggested that having once left the home den, an animal ordinarily did not return until it had finished its nightly foraging, and wandered more or less at random over its home range. Ecology of the Opossum on a Natural Area in Northeastern Kansas 2011-08-26T02:00:22.450Z Territoriality and home range concepts as applied to mammals. A Population Study of the Prairie Vole (Microtus ochrogaster) in Northeastern Kansas 2012-04-08T02:00:23.123Z Such small home ranges suggest that bipedalism evolved for other reasons, she said. Hominid females roamed while males waited-study 2011-06-01T17:57:46Z At this time, home ranges of small rodents can not be measured with great precision, therefore any such calculations are, at best, only approximations. Comparative Ecology of Pinyon Mice and Deer Mice in Mesa Verde National Park, Colorado 2012-02-24T03:00:32.243Z Hibernacula, unlike nesting sites, were within the known or estimated home ranges of all individuals studied. Natural History of the Ornate Box Turtle, Terrapene ornata ornata Agassiz 2011-10-01T02:00:30.200Z For the 37 opossums caught at two, three or four different trapping stations, the mean distance was 817 feet; this is an indication of home ranges of approximately 48 acres in extent. Ecology of the Opossum on a Natural Area in Northeastern Kansas 2011-08-26T02:00:22.450Z Activity and home range of the field mouse. A Population Study of the Prairie Vole (Microtus ochrogaster) in Northeastern Kansas 2012-04-08T02:00:23.123Z The male Sharp-tailed Sparrow confines itself to a breeding home range. Comparative Breeding Behavior of Ammospiza caudacuta and A. maritima 2011-06-01T02:00:28.030Z This does not imply that estimations of home range are of little value; however, calculations of density, using home ranges as a basis, tend to amplify the variance inherent in the data. Comparative Ecology of Pinyon Mice and Deer Mice in Mesa Verde National Park, Colorado 2012-02-24T03:00:32.243Z The actual home range of almost every individual studied, even of those individuals for which the most data were available, probably differed at least slightly from the observed or estimated home range. Natural History of the Ornate Box Turtle, Terrapene ornata ornata Agassiz 2011-10-01T02:00:30.200Z For this group, maximum distances between trapping stations averaged 1954 feet suggesting a home range of nearly 70 acres, larger than that computed for the opossums caught at only two, three, or four stations. Ecology of the Opossum on a Natural Area in Northeastern Kansas 2011-08-26T02:00:22.450Z Apparent home range of Microtus in relation to distance between traps. A Population Study of the Prairie Vole (Microtus ochrogaster) in Northeastern Kansas 2012-04-08T02:00:23.123Z Observations of marked birds also indicated that there was considerable overlap of the breeding home ranges of individual males. Comparative Breeding Behavior of Ammospiza caudacuta and A. maritima 2011-06-01T02:00:28.030Z More data on home ranges were obtained in that year due to higher population densities than in 1964. Comparative Ecology of Pinyon Mice and Deer Mice in Mesa Verde National Park, Colorado 2012-02-24T03:00:32.243Z The diagram for "homing males" represents the distances traveled by two males removed from their normal home ranges to test homing ability. Natural History of the Ornate Box Turtle, Terrapene ornata ornata Agassiz 2011-10-01T02:00:30.200Z Each average figure for home range is perhaps erroneously low for this reason. Ecology of the Opossum on a Natural Area in Northeastern Kansas 2011-08-26T02:00:22.450Z Researchers will now use the data from the transmitters to learn about the cotingas' home range, habitats, and feeding and reproductive behavior to develop a conservation plan for the birds. Rare Costa Rican birds captured, tagged for study for the first time 2011-03-10T16:15:00.243Z The deaths of the two males seemed to cause an increase in both daily distance traveled and home range in Wolf No. 11. An Experimental Translocation of the Eastern Timber Wolf 2011-01-21T03:00:13.917Z The estimated home ranges of P. maniculatus tended to reach maximum known size at about seven captures, whereas the estimated ranges of P. truei tended to attain maximum known size after nine or more captures. Comparative Ecology of Pinyon Mice and Deer Mice in Mesa Verde National Park, Colorado 2012-02-24T03:00:32.243Z A minimum home range could theoretically consist of the smallest area in which adequate food and shelter were available. Natural History of the Ornate Box Turtle, Terrapene ornata ornata Agassiz 2011-10-01T02:00:30.200Z Approximate size of the usual home range is apparent from the several figures although various unknown or unmeasurable factors distort the data. Ecology of the Opossum on a Natural Area in Northeastern Kansas 2011-08-26T02:00:22.450Z Now restricted to a handful of tropical rainforests within Thailand, Malaysia, Brunei and Indonesia, nothing is known about the size of each cat's home range or the density of the remaining population. Flat-headed cat is now endangered 2010-03-19T10:27:00Z The animals cannot be expected to establish a home range centered on or even including the point of release. An Experimental Translocation of the Eastern Timber Wolf 2011-01-21T03:00:13.917Z The controversy over the number of captures of an individual animal required for a reliable estimate of its home range was not settled by my data. Comparative Ecology of Pinyon Mice and Deer Mice in Mesa Verde National Park, Colorado 2012-02-24T03:00:32.243Z The home range of only one turtle, an adult female, was known to include parts of both areas. Natural History of the Ornate Box Turtle, Terrapene ornata ornata Agassiz 2011-10-01T02:00:30.200Z The usual home range of the opossum in the area of the study is in the neighborhood of 50 acres or a little less. Ecology of the Opossum on a Natural Area in Northeastern Kansas 2011-08-26T02:00:22.450Z "Females are core group members with higher social status than males, and more knowledge about food resources in the home range," explained Ms van de Waal. Monkeys learn more from females 2010-03-17T10:56:00Z Females roam over a home range of about 80 square miles, while males patrol ranges as big as 250 square miles. 2010-01-05T18:05:00Z I initially decided to estimate home ranges for animals caught five or more times and at three or more stations. Comparative Ecology of Pinyon Mice and Deer Mice in Mesa Verde National Park, Colorado 2012-02-24T03:00:32.243Z Known home ranges of nearly every individual observed were on either one of the sides of the hill but not on both sides. Natural History of the Ornate Box Turtle, Terrapene ornata ornata Agassiz 2011-10-01T02:00:30.200Z The young males, after becoming independent must tend to wander much more widely, and to settle in new areas far removed from the mother's home range. Ecology of the Opossum on a Natural Area in Northeastern Kansas 2011-08-26T02:00:22.450Z Therefore it seems that the frogs returned by a different route to their home ranges after breeding. Field Study of Kansas Ant-Eating Frog The area within which routine daily movements are confined constitutes the home range, which is variable in size and shape. Ecological Observations on the Woodrat, Neotoma floridana Sizes of home ranges between adult and non-adult females did not differ significantly. Comparative Ecology of Pinyon Mice and Deer Mice in Mesa Verde National Park, Colorado 2012-02-24T03:00:32.243Z Individual box turtles at the Damm Farm seemingly occupied but one home range and it did not change from year to year. Natural History of the Ornate Box Turtle, Terrapene ornata ornata Agassiz 2011-10-01T02:00:30.200Z Successive captures of individuals revealed the usual extent of home ranges, which averaged approximately 50 acres, and tended to a circular or broadly oval shape. Ecology of the Opossum on a Natural Area in Northeastern Kansas 2011-08-26T02:00:22.450Z Movements of dispersal in the young, recently metamorphosed and not yet settled in a regular home range. Field Study of Kansas Ant-Eating Frog An individual may, and usually does, alter its home range over periods of time. Ecological Observations on the Woodrat, Neotoma floridana Sizes of home ranges of adult and non-adult males of this species did not differ significantly. Comparative Ecology of Pinyon Mice and Deer Mice in Mesa Verde National Park, Colorado 2012-02-24T03:00:32.243Z Seemingly, therefore, factors additional to food and shelter influence size of home range. Natural History of the Ornate Box Turtle, Terrapene ornata ornata Agassiz 2011-10-01T02:00:30.200Z No significant difference in size of home ranges between males and females, or between adults and well-grown young, was found. Ecology of the Opossum on a Natural Area in Northeastern Kansas 2011-08-26T02:00:22.450Z Shifts from one home range to another; such shifts may have been either long or short, and may have occurred abruptly or by gradual stages.3. Field Study of Kansas Ant-Eating Frog The home range is somewhat nebulous because the rat may at any time move far beyond the small area to which its activities are largely confined. Ecological Observations on the Woodrat, Neotoma floridana The largest home range for adult males of either species was number three of P. truei; he had a range of 80,000 square feet. Comparative Ecology of Pinyon Mice and Deer Mice in Mesa Verde National Park, Colorado 2012-02-24T03:00:32.243Z One subdivision of the main pasture, the northwest corner area, is an example of a relatively small natural area in which many individual box turtles had home ranges. Natural History of the Ornate Box Turtle, Terrapene ornata ornata Agassiz 2011-10-01T02:00:30.200Z The wolf followed it for a long distance till it passed out of her home range, and then slowly retraced it through the darkening spruce woods, sniffing suspiciously as she went. Dusty Star In most or all instances these adults were regularly established in permanent home ranges, and they often moved through areas unsuitable as habitat to reach the ponds.4. Field Study of Kansas Ant-Eating Frog The home range is thus somewhat three-dimensional; both trails and feeding places are often above ground. Ecological Observations on the Woodrat, Neotoma floridana The sizes of home ranges of males and females did not differ significantly. Comparative Ecology of Pinyon Mice and Deer Mice in Mesa Verde National Park, Colorado 2012-02-24T03:00:32.243Z Several females at the Damm Farm traveled long distances from their home ranges to nest but other females nested within their known or estimated home ranges. Natural History of the Ornate Box Turtle, Terrapene ornata ornata Agassiz 2011-10-01T02:00:30.200Z By comparing results obtained from different methods, previously used, for determining the size of the home range I have attempted to develop a more valid procedure. Home Range and Movements of the Eastern Cottontail in Kansas For longer distances the trend is toward progressively fewer records, indicating that typical home ranges are small. Field Study of Kansas Ant-Eating Frog Most of the long movements by males did not constitute clear-cut shifts in home range, and many returned to their original locations. Ecological Observations on the Woodrat, Neotoma floridana For purposes of comparison, these average distances between captures could be considered as radii of the estimated home ranges. Comparative Ecology of Pinyon Mice and Deer Mice in Mesa Verde National Park, Colorado 2012-02-24T03:00:32.243Z Ornate box turtles seem to find places of shelter by trial and error along regularly used routes of travel in their home ranges. Natural History of the Ornate Box Turtle, Terrapene ornata ornata Agassiz 2011-10-01T02:00:30.200Z Another method, which has been used to determine the home range of birds, is to map the movements of an individual as it is observed. Home Range and Movements of the Eastern Cottontail in Kansas A typical home range, therefore, seems to average no more than 75 feet in radius. Field Study of Kansas Ant-Eating Frog Although home ranges may overlap to some extent, intraspecific intolerance tends to maintain a certain minimum interval between houses. Ecological Observations on the Woodrat, Neotoma floridana Usually the estimated home ranges were not symmetrical, and did not resemble oblongs or circles in outline. Comparative Ecology of Pinyon Mice and Deer Mice in Mesa Verde National Park, Colorado 2012-02-24T03:00:32.243Z The killers have to seek other hunting grounds, frequently far from their home range, and often they become gaunt and lank, driven to take desperate chances to save themselves from starvation and death. A Mountain Boyhood The methods used by other investigators to calculate the home range of the cottontail have yielded estimates varying from 0.1 acre to 100 acres. Home Range and Movements of the Eastern Cottontail in Kansas In many instances the distance involved was only a few yards, but there is some evidence that home ranges may be as long as 400 feet in greatest diameter. Field Study of Kansas Ant-Eating Frog However, woodrats often wander far beyond the limits of the usual home range. Ecological Observations on the Woodrat, Neotoma floridana Since trapping grids are geometrical in form, there is a tendency among investigators to consider home ranges of animals as conforming to geometrical design. Comparative Ecology of Pinyon Mice and Deer Mice in Mesa Verde National Park, Colorado 2012-02-24T03:00:32.243Z Early one fall the grizzly left his home range and headed for the foothills. A Mountain Boyhood Such wide variations in the estimated size of home range may result from the use of different methods and from insufficient data. Home Range and Movements of the Eastern Cottontail in Kansas Most of the big ranches employed a few cowboys the year around to keep the fences in repair and to prevent cows from straying too far from the home range. Arizona's Yesterday Being the Narrative of John H. Cady, Pioneer There was always a danger, too, that the horses would break for their home range, although he kept the mare who led the band on the picket rope when they were not travelling. 'Me--Smith' In some instances, the home range of an individual overlaps ranges of several other individuals. Comparative Ecology of Pinyon Mice and Deer Mice in Mesa Verde National Park, Colorado 2012-02-24T03:00:32.243Z When his home range becomes settled up and the sources of his natural food are destroyed, he is forced to seek new haunts and to eat such food as his new location affords. A Mountain Boyhood The data obtained from live-trapping are not fully adequate because traps cannot sample, in time and space, the entire home range of an individual. Home Range and Movements of the Eastern Cottontail in Kansas The home range was generally anywhere within a twenty-mile radius of the ranch house. Arizona's Yesterday Being the Narrative of John H. Cady, Pioneer This love of a permanent home range now operated in a peculiar way. The Yellow Horde Sizes of home ranges of males and females did not differ significantly. Comparative Ecology of Pinyon Mice and Deer Mice in Mesa Verde National Park, Colorado 2012-02-24T03:00:32.243Z I doubt if they would have been misled at home, for animals are commonly familiar with every sight, sound and scent of their home range, and wolves are uncannily shrewd. A Mountain Boyhood Also, "trap habit" or "trap shyness" may distort the apparent shape of the home range. Home Range and Movements of the Eastern Cottontail in Kansas Their plunging bodies milled about, and with uplifted tails and tossing horns, they were on the run northward toward the home range—the Diamond D! Kid Wolf of Texas Many things of which Breed was unaware had taken place on his old home range since he had left it, and Flatear, terrified by the latest of these events, had slunk away to the north. The Yellow Horde The distance between captures has been used by several investigators as an index of the extent of home range. Comparative Ecology of Pinyon Mice and Deer Mice in Mesa Verde National Park, Colorado 2012-02-24T03:00:32.243Z Repeated trips into that rough region informed me that one or two bears lived there, and that though they often left it to explore some other region, they eventually returned to their own home range. A Mountain Boyhood In order to compare these methods I have calculated home range from my data by each of five different methods. Home Range and Movements of the Eastern Cottontail in Kansas A noted American scavenger is the peccary, a species of wild hog, whose home ranges from Texas to the Pampas of South America. The Human Side of Animals For a brief instant he turned his eyes away from her and gazed after a herd that was moving slowly toward the north, Barbee and the other boys heading again toward the home range. Man to Man Each mouse probably has refuges, each containing a nest, strategically located in its home range. Comparative Ecology of Pinyon Mice and Deer Mice in Mesa Verde National Park, Colorado 2012-02-24T03:00:32.243Z It was to this pass that the Three Bar home range had come in the last five years. The Settling of the Sage The cottontail establishes a definite home range and may live its entire life within this area, which permits familiarity with food sources, hiding places, and escape routes. Home Range and Movements of the Eastern Cottontail in Kansas Though it is not a fast traveller its home range may cover anywhere from five to fifty miles. The Drama of the Forests Romance and Adventure Hence, having filled his canteen and tied his provisions into a bundle, he slung the two over his shoulders, left his saddle where it was and turned his face toward the home range. The Desert Valley My data do not indicate whether individuals of P. maniculatus use a similar arrangement of nests within their home ranges. Comparative Ecology of Pinyon Mice and Deer Mice in Mesa Verde National Park, Colorado 2012-02-24T03:00:32.243Z But they were good neighbors and kept hands off so far as brands on their home range were concerned. The Settling of the Sage The cottontail usually establishes its home range in the area where it was born, being semi-gregarious and tolerant of crowding. Home Range and Movements of the Eastern Cottontail in Kansas Before him were the mountains with Kemble's place upon their far slope and his own home range lying still farther to the east. Six Feet Four I hit for the home range, which is Upper Milk River. The Lonesome Trail and Other Stories The area encompassed within the home ranges was measured by planimetering the outline of the drawing. Comparative Ecology of Pinyon Mice and Deer Mice in Mesa Verde National Park, Colorado 2012-02-24T03:00:32.243Z The Three Bar home range was one of many similar isolated spots where the inhabitants held out for a continuance of the old order of things. The Settling of the Sage No young were observed to have moved to another home range after they matured, although some may have moved off the study area and thereby escaped observation. Home Range and Movements of the Eastern Cottontail in Kansas And then we'll be busy branding on the home range for a month, and I can't spare a vaquero a day to carry a letter to Santa Maria. A Texas Matchmaker Weary had been sent, two weeks ago, to the upper Marias country after three saddle horses that had strayed from the home range, and which had been seen near Shelby. The Lonesome Trail and Other Stories At least two such readings were taken for each home range; then these planimeter values were converted into square feet. Comparative Ecology of Pinyon Mice and Deer Mice in Mesa Verde National Park, Colorado 2012-02-24T03:00:32.243Z With that filed on they would control their home range. The Settling of the Sage Cottontails observed foraging were estimated to utilize 10 to 20 per cent of the home range area in one evening. Home Range and Movements of the Eastern Cottontail in Kansas After taking these in and branding the calves, we worked over our home range until near the holidays. A Texas Matchmaker Three days' work on the home range and we had two thousand cattle under herd, consisting of dry or barren cows and steers three years old or over, fully half the latter being heavy beeves. Reed Anthony, Cowman The peripheries of the inscribed circles were then connected and the estimated home range was delimited by the exclusive boundary-strip method. Comparative Ecology of Pinyon Mice and Deer Mice in Mesa Verde National Park, Colorado 2012-02-24T03:00:32.243Z The cowhands were out working the range in pairs, branding late-dropped calves and moving drifted stock back to the home range. The Settling of the Sage The cottontail is not easily driven out of its home range. Home Range and Movements of the Eastern Cottontail in Kansas In our round-up for branding, we had driven to the home range all outside cattle indiscriminately. A Texas Matchmaker All the neighboring ranches gave us round-ups, and by the time we reached the home range of the brand I was beginning to get uneasy on account of the numbers under herd. Reed Anthony, Cowman Number eight had the largest home range of any female of P. truei; she was captured ten times, and had a range of 83,333 square feet. Comparative Ecology of Pinyon Mice and Deer Mice in Mesa Verde National Park, Colorado 2012-02-24T03:00:32.243Z We gathered this year's drive on our home ranges," said the foreman, "and each age was held separate until the herds were made up. Wells Brothers The Young Cattle Kings The average of the longest distance traveled between captures for cottontails whose entire home ranges were thought to have been sampled was 900 feet for males and 684 feet for females. Home Range and Movements of the Eastern Cottontail in Kansas The branding on the home range was an easy matter. A Texas Matchmaker Ranchmen were so indifferent that many never went off their home range in branding the calf crop, not considering a ten or twenty per cent loss of any importance. Reed Anthony, Cowman Most of her home range was in the western half of unit H, but extended into parts of units D, I, G and N. Comparative Ecology of Pinyon Mice and Deer Mice in Mesa Verde National Park, Colorado 2012-02-24T03:00:32.243Z When the round-up swept the home range, gathering and branding, it chanced that his part of the circle took him and Sandy Moran down that way. Lonesome Land The average of the maximum distance across the home range for cottontails whose home range had been thoroughly sampled was 1019 feet for males, and 936 feet for females. Home Range and Movements of the Eastern Cottontail in Kansas After a week's rest, with fresh horses, we re-rode the home range in squads of two, and branded any calves we found with a running iron. A Texas Matchmaker Everything had worked out so nicely in receiving the purchased herds that I finally concluded to send out my steers, and we began gathering on the home range. Reed Anthony, Cowman Only data from mice caught four or more times were used because these individuals probably had home ranges in the study area, whereas those caught fewer than four times may have been migrants. Comparative Ecology of Pinyon Mice and Deer Mice in Mesa Verde National Park, Colorado 2012-02-24T03:00:32.243Z They had gone in a vast circle around the home range of the Warhorse and now were less than a mile from the farm-house of the black Dog. Animal Heroes The home range is used by the cottontail in different ways, depending on the needs of the individual and the condition of the habitat. Home Range and Movements of the Eastern Cottontail in Kansas On the home range, in gathering to brand, we never disturbed the mixed cattle, cutting out only the cows and calves. A Texas Matchmaker With the opening of spring two of my old foremen were promoted to assist in the receiving, as my contracts called for everything to be passed upon on the home range before starting the herds. Reed Anthony, Cowman On the basis of the sizes of estimated home ranges, it is possible to compute the approximate number of individuals of each species that occur in each acre of appropriate habitat. Comparative Ecology of Pinyon Mice and Deer Mice in Mesa Verde National Park, Colorado 2012-02-24T03:00:32.243Z I was able to report less than one per cent. loss on the home range, with the possibility of but few cattle having escaped us during the winter. The Outlet In uniform habitat the home range is roughly circular and is used most near its center and least toward its periphery. Home Range and Movements of the Eastern Cottontail in Kansas When a home range had nine or more peripheral points, on an average, the size of home range did not increase significantly with additional captures, observations in the field, or records of trails. Home Range and Movements of the Eastern Cottontail in Kansas Had I been ambitious, double that number could have been easily secured, but we never went off the home range in gathering calves to brand. Reed Anthony, Cowman The higher estimates of density appear to be large enough to compensate for any overlapping of home ranges. Comparative Ecology of Pinyon Mice and Deer Mice in Mesa Verde National Park, Colorado 2012-02-24T03:00:32.243Z A similar situation has been shown by previous authors who have plotted the size of home range against number of captures in live-traps, where only live-trapping was used to gather data. Home Range and Movements of the Eastern Cottontail in Kansas The entire home range is traversed every four or five days. Home Range and Movements of the Eastern Cottontail in Kansas Therefore, in my study, home ranges with nine or more peripheral points were considered to be adequately studied. Home Range and Movements of the Eastern Cottontail in Kansas Half a dozen round-ups on the home range would be all that was necessary in completing the numbers allotted to the Edwards ranch. Reed Anthony, Cowman The calculation of density of each species within the trapping grid is dependent upon the precision with which the home ranges of individuals can be estimated. Comparative Ecology of Pinyon Mice and Deer Mice in Mesa Verde National Park, Colorado 2012-02-24T03:00:32.243Z The composite method is superior to others for studying the home range and movements of cottontails. Home Range and Movements of the Eastern Cottontail in Kansas If two centers of activity were maintained, the cottontail usually traversed the entire home range every seven to 11 days. Home Range and Movements of the Eastern Cottontail in Kansas Maps showing home ranges of cottontails in relation to woodland and open fields on the study area. Home Range and Movements of the Eastern Cottontail in Kansas It was the immediate necessity that was worrying me, for it meant a summer's work to gather our cattle on Red River and in the intermediate country, and bring them back to the home range. Reed Anthony, Cowman Analyses of trapping data indicate that the density of each species probably is overestimated by calculations of density based on home range data. Comparative Ecology of Pinyon Mice and Deer Mice in Mesa Verde National Park, Colorado 2012-02-24T03:00:32.243Z Each home range is shown slightly rounded from the polygonal figures obtained by connecting actual points where the animal was recorded. Home Range and Movements of the Eastern Cottontail in Kansas There may be 20 to 30 resting places used by cottontails within a single home range area since five to seven cottontails may live there as co-occupants at one time. Home Range and Movements of the Eastern Cottontail in Kansas Two home ranges of a cottontail which moved from its original area to occupy a new one 410 feet farther north across a field in September and October, 1955. Home Range and Movements of the Eastern Cottontail in Kansas Other cottontails increased their home ranges in summer by five to 15 per cent. Home Range and Movements of the Eastern Cottontail in Kansas There were notable exceptions to this generality, for some lactating females had exceptionally large home ranges. Comparative Ecology of Pinyon Mice and Deer Mice in Mesa Verde National Park, Colorado 2012-02-24T03:00:32.243Z Nevertheless, some of the largest home ranges measured were those of females. Home Range and Movements of the Eastern Cottontail in Kansas Subsequently she was seen on four different occasions, over a period of one month, in her original home range, 1,100 feet from the point where she escaped. Home Range and Movements of the Eastern Cottontail in Kansas Diagrams showing home ranges of cottontails in relation to woodland and open fields on the study area. Home Range and Movements of the Eastern Cottontail in Kansas Each home range is shown slightly rounded from the polygonal figures obtained by connecting actual points where the animal was recorded. Home Range and Movements of the Eastern Cottontail in Kansas At present there is a poverty of knowledge concerning methods for determining the precise home ranges of small mammals. Comparative Ecology of Pinyon Mice and Deer Mice in Mesa Verde National Park, Colorado 2012-02-24T03:00:32.243Z Overlapping home ranges of four of the many cottontails living on the study area. Home Range and Movements of the Eastern Cottontail in Kansas When last observed the cottontail was 1,700 feet from its home range and was headed in the opposite direction. Home Range and Movements of the Eastern Cottontail in Kansas Each of the four cottontails occupied approximately the same home range throughout the year. Home Range and Movements of the Eastern Cottontail in Kansas The size of the home range in immature cottontails varies between 0.1 acre and 4.0 acres, depending on the age and size of the individual. Home Range and Movements of the Eastern Cottontail in Kansas The home range grid encompasses approximately one million square feet. Comparative Ecology of Pinyon Mice and Deer Mice in Mesa Verde National Park, Colorado 2012-02-24T03:00:32.243Z By the time cottontails are four to five months old they inhabit a home range of four to eight acres. Home Range and Movements of the Eastern Cottontail in Kansas Although for several months afterward traps were operated in the cottontail's home range area and in the area where it escaped, the animal was never recaptured. Home Range and Movements of the Eastern Cottontail in Kansas In September this cottontail occupied a home range of one and one-half acres. Home Range and Movements of the Eastern Cottontail in Kansas In the next year it enlarged its home range to 11.5 acres. Home Range and Movements of the Eastern Cottontail in Kansas Changes from one home range to another are unusual, but minor shifts, in response to changes in vegetation and weather, are common. Home Range and Movements of the Eastern Cottontail in Kansas Two months after the change was first noticed the cottontail was living in a new home range of 6.6 acres 300 feet from its original home range. Home Range and Movements of the Eastern Cottontail in Kansas The remaining 54 served for calculation of home range by one or more methods. Home Range and Movements of the Eastern Cottontail in Kansas In changing from one home range to the other the cottontail traveled along a dry stream bed and was captured there three times. Home Range and Movements of the Eastern Cottontail in Kansas Maps of the home ranges of four of those 18 cottontails for which sufficient data were collected to determine the size of home range are shown in the lower part of Figure 3. Home Range and Movements of the Eastern Cottontail in Kansas The maintenance of a home range is of survival value to the cottontail. Home Range and Movements of the Eastern Cottontail in Kansas Knowledge of the home range is of value to man when control or propagation of cottontail populations is desired. Home Range and Movements of the Eastern Cottontail in Kansas The minimum, maximum and average home ranges for these 54 individuals were calculated by each of five methods. Home Range and Movements of the Eastern Cottontail in Kansas Cottontails establish a home range where they are born and enlarge it to nearly full size the first winter. Home Range and Movements of the Eastern Cottontail in Kansas When escaping from predators cottontails moved 30 to 1200 feet and used 5 to 70 per cent of their home ranges, depending on the type of pursuit. Home Range and Movements of the Eastern Cottontail in Kansas Some cottontails that were followed, ran in almost circular courses for as far as 3000 feet and covered as much as 90 per cent of their home ranges. Home Range and Movements of the Eastern Cottontail in Kansas The home range is used most intensively near centers of activity that are near woodland edges or in other areas of good cover. Home Range and Movements of the Eastern Cottontail in Kansas It was necessary to determine which cottontails had been studied sufficiently to determine the approximate extent of their home ranges. Home Range and Movements of the Eastern Cottontail in Kansas Cottontails use their home range most intensively in winter when they are forced to move long distances in poor cover, searching for food. Home Range and Movements of the Eastern Cottontail in Kansas Two instances of homing were observed; cottontails moved 1,100 and 1,800 feet to return to their home ranges, but one cottontail that escaped 1700 feet from home failed to return. Home Range and Movements of the Eastern Cottontail in Kansas The average home range of 18 cottontails for whom adequate data were gathered was 8.34 acres. Home Range and Movements of the Eastern Cottontail in Kansas The home ranges of males averaged 1.16 acre larger than those of females. Home Range and Movements of the Eastern Cottontail in Kansas On the average, a sufficient number of records to yield approximately nine peripheral points must be obtained before the full extent of the home range is revealed. Home Range and Movements of the Eastern Cottontail in Kansas In summer, cottontails increased their home ranges 5 to 15 per cent by taking advantage of cover provided by the more abundant vegetation. Home Range and Movements of the Eastern Cottontail in Kansas Cottontails three weeks to five months of age lived in home ranges of between 0.1 and 4.0 acres and enlarged their home ranges almost to their ultimate full size in the first winter. Home Range and Movements of the Eastern Cottontail in Kansas |
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