Study Of Mute Swans Explains Evolutionary Riddle

In an important new study forthcoming from The American Naturalist, biologists from the University of Oxford tracked a colony of Mute Swans for more than two decades to explore a longstanding evolutionary question: Does the number of eggs laid by a female bird – “clutch size” – change in accordance with natural selection?
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Another spring, another swan family
Another spring, another swan family by rkramer62, Creative Commons on Flickr

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