Two-Toned Butterfly
The northern cardinal isn’t the only species that gets the split color treatment. Gynandromorphism also exists in butterflies as you see in the image above. It happens when a genetic error occurs during early cell division. This causes male and female traits to be set up over the body with one side male and the other female.
This effect happens with crustaceans, birds, insects, and butterflies. The brown side on this butterfly is the female while the blue is male.
