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A new study published in Proceedings of the National Academy of Sciences (PNAS) has discovered an ingenuous trick by the African cuckoo finch to transfer her parental responsibilities to other birds. ...

Three nestlings beg for food, but the right-hand one is an imposter, an indigobird masquerading as a firefinch. Claire N. Spottiswoode It’s a warm wet day in Zambia and the rains are finally falling.