animal migration

Animal Migration(动物迁徙)

Have you ever heard loud honking calls and looked up to see geese flying in a V-formation? The geese are getting ready for a long trip, or they may be on their way already. Geese are among the animals that travel south for the winter. In spring, they return to their summer homes in the north. Their journeys are known as migrations.

Why do animals migrate? In most cases, they migrate to have the best possible living conditions all year-round. Geese, like other migrating birds, travel south to have a ready food supply. The grass they feed on becomes scarce during the northern winter. But in summer it’s plentiful again, and they return north to mate, lay eggs, and hatch baby geese.

MIGRATING BIRDS

Geese aren’t the only birds that migrate. Arctic terns make one of the longest journeys of all. These seabirds spend the summer in the Arctic, where there are plenty of small fish to eat. The birds lay eggs and rear their you