Sex-Change Chicken: Gertie the Hen Becomes Bertie the Cockerel

Under the right circumstances, a hen can actually transform herself into a cock.

Family kick out chicken after it turns into randy cockerel in rare

Can chickens really change gender? - BBC Science Focus Magazine

How To Tell A Rooster From A Hen (Is it a Boy or a Girl?) - The

Birds To Dinosaur: Python Vestigial Pelvis, Femur and Spur

Why do some humans believe there are more then two sexes? Does this occur in any other mammals? - Quora

Is this a problem? : r/BackYardChickens

Am duck on Tumblr

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Gertie Hen Who Has Become Bertie Editorial Stock Photo - Stock

Toxins, Free Full-Text

Birds To Dinosaur: Python Vestigial Pelvis, Femur and Spur

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