Migration has huge benefits for birds, but the benefits of migration come at a cost. Learn how ornithologists are using modern technology to help these long-dis

Discusses how birds migrate and provides information on migrations in each region of the world and on the migrating habits of hundreds of species of birds.

Far off the coast of California looms a harsh rock known as the island of San Nicholas. Dolphins flash in the blue waters around it, sea otter play in the vast