A Strategic Arms Race Among Birds
10,000 Birds
FEBRUARY 18, 2014
The vast majority of the 10,000+ living species of birds are passerines, and the vast majority of those have a similar system of breeding: Mom and dad bird make a nest and share parental responsibilities roughly equally, if not identically. Science (New York, N.Y.), doi:10.1126/science.1240039. Photo of a Fairy Wren from HERE.
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