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On a gray winter day about a dozen years ago, when Alex Nickley and his twin brother Ben were home from college, they took a walk around their neighborhood in Northeast Ohio. Ben had recently taken a course in ornithology, which is the study of birds, and pointed out the different species he spotted among the branches of the bare trees.
Duke Event Calendar duke.edu - get the latest breaking news, showbiz & celebrity photos, sport news & rumours, viral videos and top stories from duke.edu Daily Mail and Mail on Sunday newspapers.