BIRDS - Hummingbirds' 22-million-year-old history of remarkable change is far from complete

The first comprehensive map of hummingbirds' 22-million-year-old family tree—reconstructed based on careful analysis of 284 of the world's 338 known species—tells a story of rapid and ongoing diversification. The decade-long study reported in the Cell Press journal Current Biology on April 3 also helps to explain how today's hummingbirds came to live where they do ...

http://phys.org/news/2014-04-hummingbirds-million-year-old-history-rem