News From the Field
Hummingbird evolution soared after they invaded South America 22 million years ago
April 3, 2014
Researchers, led by Jim McGuire of University of California, Berkeley, generated a family tree of the hummingbirds that shows they diverged from swifts and treeswifts 42 million years ago, invaded South America 22 million years ago and diversified rapidly to take over America. They occupied high elevations as the Andes Mountains rose and invaded North America and the Caribbean less than 5 million years ago.
University of California, Berkeley
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