The changing climate is disrupting migration patterns for animals across the globe. The ptarmigan, a chicken-like bird, is in for a warm winter. For a migratory bird, this isn't a good thing, NNSL ...

NatGeo's "Incredible Animal Journeys" follows the migration of animals both big and small, often with their young, all around the world. Some of the world's greatest explorers are in the animal ...

Migrating animals have for a long time been tracked by recapturing tagged individuals. More recently, radio-telemetry, which requires an observer to physically follow the tagged animal, has been used.

It’s the longest migration of any freshwater fish in the world, according to new research—and that creates a host of dangers for this unusual animal. ANIMALS This 6-foot-long, 200-pound ...

NatGeo's new series, "Incredible Animal Journeys," follows the migration of animals both big and small, often with their young, all around the world. An Arctic fox stands on a snowy mound in ...