Birds migrated from north to south, not east to west.

After the birds migrated south, the weather began to get really cold.

Millions of birds migrating south through the sound over the next few weeks will be at particular risk, they said.

But it has not been enough, and the problem lies in the time that the birds migrate.

Find someone who has seen a flock of birds migrating.

We often forget how far the birds around us migrate over the course of an ordinary year.

It's nothing like the beach, where I used to watch the wind change direction, the birds migrate.

Birds from the north and east of its breeding range migrate to winter further south.

There is some evidence that male birds migrate several days before females.

Birds that breed in the north migrate south for winter.