The Friends of Princeton Nursery Lands hold their annual Thanksgiving Day Walk in the Mapleton Preserve, from 10-11:30 a.m. This year, the focus is birds of all kinds — including turkeys. Led by Karen Linder, president of the organization, the group will talk about feathers, look for local birds and migrating flocks, and search for bird nests. The event is free and suitable for all ages. Meet at Mapleton Preserve/D&R Canal State Park, 145 Mapleton Road, Kingston. Visit fpnl.org for more information.