The four-legged clucker named Forzie was found dead by its owner who plans to donate it to the Auckland Museum after undergoing some necessary process.
The Te Uku-bred Barnevelder chick - hatched at Marlene Dickey's property at the start of last month - has died.
But it wasn't the extra legs that led to its death, more likely an extra anus, Mrs Dickey believes.
"He developed two bottoms and I think he got glugged up," she said.
While she was surprised by Forzie's death - he weighed a "good pound of butter" and was gaining feathers slowly - it was not totally unexpected, she said.
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