A longtime birdwatcher captured some photographs of what he called a "once-in-a-lifetime, one in a million bird" in Pennsylvania. The bird, half-red and half-white, is a bilateral gynandromorph northern cardinal. It is "divided right down the middle, half male and half female."
Birdwatcher James Hill shared his photos on Facebook.
Hill said he's been birding for 48 years and has never seen a bird like it before.
Many bird species have been known to produce some half-male, half-female specimens, but the cardinals are some of the most-documented because of the stark contrast in color between the red male side and the brown female side.
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