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Ned K. Johnson Young Investigator Award, 2007

avian tree of life with molecular markers and then mapping other biological characters such as life history, behavior, geographic distribution, and ecology on the tree to understand their evolution. Apart from studying how biodiversity has evolved, Baker is very active in conservation of migratory shorebirds, which are declining around the world. In another landmark paper, he demonstrated that the rapid population decline in Red Knots (Calidris canutus) was caused by overfishing of horseshoe crabs and their eggs in Delaware Bay, thereby preventing most birds from refueling properly and lowering their annual survival in the Arctic breeding grounds. Along with Professor Theunis Piersma, Baker is cofounder of the Global Flyway Network, which provides an early-warning service for identifying migratory shorebirds at risk. Throughout his career, Baker’s many publications have been aimed at general audiences and have resulted in fundamental contributions to our knowledge of the evolution of birds atmultiple taxonomic tiers and of evolutionary processes in general. For his outstanding and influential work in avian molecular evolution, the AOU presents Allan J. Baker with the William Brewster Memorial Award for 2007. Award criteria.—TheWilliamBrewsterMemorial Award consists of a medal and an honorarium provided through the endowed William Brewster Memorial Fund of the American Ornithologists’ Union. It is given annually to the author or co-authors (not previously so honored) of the most meritorious body of work on birds of theWesternHemisphere published during the 10 calendar years preceding a given AOU meeting.