Australasian Science: Australia's authority on science since 1938

Learning Before Birth

Reed warbler does not realise that the cuckoo chick is not its own.

This reed warbler does not realise that the cuckoo chick it is feeding is not its own.

By Sonia Kleindorfer and Jeremy Robertson

Superb fairy-wrens sing to their chicks before they hatch, teaching them a begging call that identifies them before cuckoo chicks can predate the nest.

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