Baby Fairy-Wrens Tweet Incubation Password for Food

Female superb fairy-wrens, Malurus cyaneus, teach their unhatched chicks a unique note that later allows the parents to distinguish their babies from parasitic cuckoos when the nestlings beg for food.
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Baby Fairy-Wrens Tweet Incubation Password for Food
Fairy-wren babies need password for food. (Colombelli-Negrel et al., Current Biology)
11/8/2012
Updated:
10/1/2015
<a><img class="size-full wp-image-1774681" title="Fairy-wren babies need password for food. (Colombelli-Negrel et al., Current Biology) " src="https://www.theepochtimes.com/assets/uploads/2015/09/wren.jpg" alt="Fairy-wren babies need password for food. (Colombelli-Negrel et al., Current Biology) " width="750" height="499"/></a>
Fairy-wren babies need password for food. (Colombelli-Negrel et al., Current Biology)