A Strategic Arms Race Among Birds
10,000 Birds
FEBRUARY 18, 2014
In the former, a female lays her fertilized egg in the nest of another species, in the hopes that her offspring will be raised by the unwitting hosts. This was the idea originally proposed to explain unbelievably huge sexual swellings in primates, to let males know who the females are. Photo of a Fairy Wren from HERE. Feeney, W.
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