Forum > Birds In The News > Why Some Cuckoos Have Blue Eggs

Webmaster Posted 21-Jan-2016 12:15
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From Science Daily on 21-Jan-2016 12:15

Cuckoos are nest parasites, meaning they lay their eggs in other birds' nests. The female cuckoo has to lay eggs that mimic the color, size and shape of the eggs of the host bird. Using a massive data set, including data from museum eggs that are over 100 years old, researchers have figured out how the ability to lay blue eggs is inherited.


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