UpdatedThu, Feb 25, 2021 at 10:06 am ET
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It’s not rare to see a pair of Northern cardinals. But what Waterford, Pennsylvania, birder Jamie Hill saw certainly was rare: a bird known as a bilateral gynandromorph, that is one divided right down the middle, half male and half female. (Shutterstock/Bonnie Taylor Barry)
GRAND VALLEY, PA When she saw the beautiful but peculiar-looking bird at her backyard feeder in Grand Valley, Annette Smith thought it was a genetic hybrid.
That sometimes happens in nature not often, but it does happen.
A liger, for example, is a cross between a male lion and a female tiger, and it has a mix of both parents traits. A tigon is born when a male tiger and female lion mate. Typically, these hybrids are the result of breeding in captivity and are rare occurrences in nature.
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An incredibly rare bilateral gynandromorph Northern Cardinal â essentially, half-female half-male â was cited over the weekend in the Grand Valley area. A similar bird in Erie was featured in the New York Times and National Geographic back in 2019.
Photo by Jamie Hill
WARREN, Pa. An exceedingly rare half-male, half-female Northern Cardinal has been observed in Warren County.
Jamie Hill of Waterford said in a Facebook post that he’s been birding for 48 years and said what he saw Saturday was a “once-in-a-lifetime, one in a million bird encounter!”
The scientific name for the bird is “bilateral gynandromorph Northern Cardinal,” he explained.
A Pennsylvania bird watcher had what he calls a once-in-a-lifetime encounter when a Northern cardinal perched in a tree appeared to be both male and female.
James R. Hill III has marveled at the feathered animals for 48 years, but on Saturday he saw a one in a million bird with bright red like a male cardinal on one side and brownish white like a female on the other.
Hill describes the rare cardinal as a bird divided right down the middle, half male and half female that stood out as pretty unusual.
Its striking appearance is the result of double fertilization, in which a female egg cell that developed with two nuclei is fertilized by two sperm.