Hosted by the Hudson River Audubon Society. Meet behind the mansion at 10 a.m. and witness the amazing migration of some of our favorite hawks. Bring binoculars, snacks, drinks and a comfortable chair if you don't want to sit at a wooden picnic table. At 1 p.m., join us at the nature center for a live birds of prey show with master falconer James Eyring. Also: Oct. 21, 28.