During the peak of the spring migration, over over billion birds will take flight each night. Here's how to help them through ...

A large vireo, the red-eyed is one of the most common songbirds ... winters in northern South America. No documented winter records for North America—reports at this season suspect.

This bird made hawk-watching famous ... traveling down the Appalachian ridges on their way to their wintering grounds in South America. They occur in light and dark (rare) morphs, females are ...