With spring well under way and the air progressively warming in Oklahoma, it's time for migratory species to make their way north once more. Among the migratory birds navigating their annual trek out ...

Red backed shrikes migrate using a fixed schedule, flying in stages with little variation, showing that genetics guide bird migration.

Millions of birds are expected to fly over the U.S. to reach their migratory destinations, and a sizeable fraction of them will pass through Michigan after the sun goes down on Sept. 29. Late on ...