The male American Goldfinch, dressed in sunny yellow, brightens every feeder he visits during the spring and summer months.

The dodo bird vanished more than 300 years ago, but its story still sparks curiosity. Native to just one island and wiped out in just a few decades, the dodo has become a symbol of extinction and ...

A male blue-winged warbler. Long-distance bird migration is one of the natural world's most inspiring phenomena-but the story of how we know what we know about bird migration is almost as amazing as ...