A laughing kookaburra at Raven Street Reserve in McDowall, Queensland, Australia. The sex-reversed birds were all classified in three ways: genetic males that have a complete feminine phenotype (i.e.

Every once in a while, a genetic anomaly will occur in the animal world that blows scientists’ minds. Take, for example, the exotic bird in the image above. It’s “gynandromorphic,” which means a ...

Male cardinals are red. Female cardinals are tan. The odd bird that's been roosting outside John and Shirley Caldwell's kitchen in Erie, Pennsylvania, is an even split of both. Divided down the middle ...

Researchers at a nature reserve in Pennsylvania discovered a truly odd bird - one with both male and female feather coloring. Rose-breasted grosbeaks are sexually dimorphic, meaning males and females ...

Thanks to the developmental fusion of male-female bird twins into one individual, this northern cardinal is half red and half tan -- split lengthwise down its middle -- and is half male and half ...