Darwin's Hummingbirds

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Science  25 Apr 2003:
Vol. 300, Issue 5619, pp. 588-589
DOI: 10.1126/science.1084477

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Island ecosystems are great places to view evolution in action. In their Perspective, Altshuler and Clark discuss studies on the islands of the Lesser Antilles (Temeles and Kress) that reveal a striking morphological coevolution of the beaks of male and female hummingbirds and the Heliconia flowers on which they feed.