Breakthroughs, discoveries, and DIY tips sent six days a week. Terms of Service and Privacy Policy. A zoologist from the University of Otago in New Zealand spotted a ...

Avian researchers in western Pennsylvania are celebrating the recent discovery of a rose-breasted grosbeak with male and female traits, a rare instance they likened to "seeing a unicorn." The ...

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 ...

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 ...

Bilateral gynandromorph green honeycreeper (Chlorophanes spiza) photographed in the wild in Colombia. (Credit: John Murillo.) An “extremely rare” half-female, half-male bird has been caught on film, a ...