Backyard Birding with Dick Worth, Feb. 9 and March 9, 10-11 a.m., Audubon Society Center, 2325 Burr St., Fairfield. Longtime birder and naturalist Dick Worth will teach you how to identify Connecticut’s birds by sight and sound. This indoor program is for adults and children ages 12 and up. Free. Donations accepted. Register online. Info: ctaudubon.org.
Nature walk, Feb. 9, 11:30 a.m.-12:15 p.m., Darien Nature Center, 120 Brookside Rd., Darien. All ages. Info: dariennaturecenter.org.