Male and female birds are often quite different. Looking at two individuals of radically different color, it’s sometimes easy to forget this. I often talk to people who think they have multiple kinds ...

TORONTO (CTV Network) — When the bird first appeared in front of birdwatchers in Colombia, it was clear from its unique plumage — bright green on the left half of its body and blue on the right half, ...

Researchers have discovered an extraordinary, vibrantly colored tropical bird with "female" feathers down one side of its body and "male" feathers down the other. Female green honeycreepers ...

A green honeycreeper spotted on a farm in Colombia exhibits a rare biological phenomenon known as bilateral gynandromorphism. By Emily Anthes Colombia is a bird watcher’s paradise. Its stunningly ...