A large vireo, the red-eyed is one of the most common songbirds in eastern woodlands. It moves sluggishly through the canopy of broadleaf forests, making it hard to detect, and often picks food by ...

They look cuddly, but red-eyed treefrogs have a secret dark side. When Michael Caldwell, Smithsonian postdoctoral fellow, filmed the frogs under infrared light he saw a curious behavior: they ...