Discover the beauty of tree buds and bark in winter at Mass Audubon’s Winter Buds and Bark Walk from 1 to 3 p.m. on Sunday, March 3. Experts will teach participants how to identify trees by their winter characteristics. Registration is required online at massaudubon.org or by calling 508-636-2473 and costs $10 for members or $12 for non-members. The walk will begin at the Stone Barn, 786 East Horseneck Road.