Forum > Birds In The News > Cuckoo Mafia: Host Birds Only Tolerate Parasitic Eggs In Their Nests When They Fear Retaliation

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Webmaster Posted 18-May-2016 09:47
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From Science Daily and BBC on 18-May-2016 09:47

The brown-headed cowbird is nothing short of a nightmare for its hosts: If they eject the brood parasite's eggs from the nest, it punishes them by destroying their entire clutch. Researchers have designed a mathematical model for analyzing the interaction between avian brood parasites and their hosts. The model calculations show that birds only accept a brood parasite's eggs in their nests if they are forced to do so by threat of retaliation on the part of the invader.


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