Like that jerk, the south polar skua, who eats penguin eggs.

比如混蛋南极贼鸥会吃企鹅蛋。

Colonies are menaced by brown skuas, predatory birds that will gladly snatch unattended eggs.

栖息地受到棕贼鸥的威胁，这种掠食性鸟类很乐意抢走无人看管的蛋。

That's why they dig their burrows up to two meters long to keep their young safe from voracious predators such as the great skuas.

所以它们才会挖出长达两米的洞穴，以保护幼鸟不受像贼鸥这样贪婪的捕食者的伤害。