Tortoises have what's called a homing instinct.

乌龟有所谓的归巢本能。

He set his face down this toward Madison Square, for the homing instinct survives even when the home is a park bench.

他把脸朝麦迪逊广场，因为即使家是公园的长椅， 归巢的本能仍然存在。