Fairy Wrens' Key to Survival: Musical 'Password'

It helps them weed out cuckoo imposters

By John Johnson,  Newser Staff

Posted Nov 15, 2012 3:40 PM CST

(Newser) – A contender for favorite new bird: the fairy wren. It has developed an ingenious trick for weeding out imposters from the nest, reports Discover (via Kottke.org). After laying her eggs, mom sings them a special song over and over with a note "that...   Read full story »

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