The woods support a wide variety of birds, including common species such as blue jays and cardinals, as well as wild turkeys. Birds of prey that breed in the park include red-tailed hawks and owls. A five-year project that began in summer 2002 attempted to reintroduce the bald eagle to Manhattan using hacking boxes in the park and eaglets brought in from the Midwest. In the first summer, three of the four introduced eaglets fledged successfully; three or four fledged each year of the program. The nesting structure was removed in 2009.