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Gertie was born a chicken but that's all changing.
Gertie's owner first noticed the changes in Gertie's appearance and behaviour a few months ago when Gertie then developed wattles, her comb became much larger and more distinctive, and stopped laying eggs.
"Then a few days later I heard her try to crow. She wasn't very good at it at first, but she's progressed nicely and now she really goes for it.
One animal specialist said fungi in stored feed could have the effects of synthetic hormones.
Whatever the cause, Gertie's owner is embracing her hen's new lifestyle,
"I'm not really sure whether Gertie has actually changed sex, but to all intents and purposes she's now a cockerel."
We wish the bird the best of luck in finding her (or his) identity.
You were born this way Gertie!