Rose-breasted Grosbeak Gynandropmorph

Grosbeak wings extended to show the difference between the male vs female side

Detailed Description

The unique Rose-breasted Grosbeak pictured displays male characteristics on the bird’s right side and female characteristics are on the bird’s left side, a trait known as bilateral gynandromorphy. Male grosbeaks are dark black with a striking rosy breast and feathers under the wing (known as underwing coverts), while female grosbeaks are brown, with yellow/orange underwing coverts.


Image Dimensions: 960 x 720

Location Taken: US