Coleman, Tim; Mentch, Lucas; Fink, Daniel; A La Sorte, Frank; Hooker, Giles; Hochachka, Wesley M.
Bird species' migratory patterns have typically been studied through individual observations and historical records. In recent years, the eBird citizen science project, which solicits observations from thousands of bird watchers around the world, has opened the door for a datadriven approach to understanding the large-scale geographical movements. Here, we focus on the North American tree swallow (Tachycineta bicolor) occurrence patterns throughout the eastern USA. Migratory departure dates for...[Show more]
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