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November 8, 2012 08:06 pm PST

Mommy and Daddy fairy-wrens sing "food passwords" to teach their eggs to sing

"Superb fairy-wren (Malurus cyaneus) mothers sing to their unhatched eggs to teach the embryo inside a 'password' a single unique note which the nestlings must later incorporate into their begging calls if they want to get fed." Zo Corbyn in Scientific American, on a very unusual example of avian communication.


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