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How Birds of a Feather Flock Together (4 of 6)

Caption: A robust tree of life for birds will be important to decipher adaptations to certain environments or the evolution of specialized behaviors, such as nest building in these hornbills. This image relates to an article that appeared in the June 27, 2008, issue of Science , published by AAAS. The study, by Dr. Shannon Hackett and colleagues at Field Museum of Natural History in Chicago, Ill. was titled "A Phylogenomic Study of Birds Reveals Their Evolutionary History."

Credit: Image courtesy of Sushma Reddy

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