Northern Cardinal with Half-Male, Half-Female Plumage Spotted in Rock Island, Illinois

This Northern Cardinal (Cardinalis cardinalis) has female plumage on its right, and male plumage on its left, a condition known as bilateral gynandromorph. Bilateral gynandromorphy is a condition in which one half of a bird’s body appears as a female and the opposite half appears as a male. Often, the left side is female and [...] —> Read More Here


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