Join an ornithologist to look for migratory birds. 8-9am, South River Farm Park, Edgewater, RSVP: 410-222-1978.

8am-noon, North Beach Senior Center: 301-855-6681.

Supplies provided to clean up along the water’s edge. 9-11am, Fort Smallwood Park, Pasadena, RSVP: [email protected].

9am-2pm, Annmarie Garden, Solomons: Annmarie.org.

Support the Chesapeake Garden Club by buying native flowers, ground cover, cuttings and bulbs of hydrangeas, hellebores, daylilies, sunflowers, dragon wing begonia, plus Mothers Day baskets and arrangements and perennials; Master Gardeners answer questions (11am). 9:30am-2:30pm, Fairview Library, Owings: chesapeakegardenclub.org.

Join the service at the pavilion then walk on the island and pray at designated stops. 10am, Solomons Pavilion: 443-794-0273.

National Wildlife Refuges like Patuxent play an important role in protecting threatened and endangered species in the US. Learn more about endangered species, where they live, and some of the things you can do to help protect them in this self-paced, drop-in program. Come when you wish and leave when you’re ready. (Also May 7). […]

Celebrate Southern Maryland traditions with antique boats and motors, cooking demos, traditional music, toy boat building, and boat rides. 10am-4pm, Calvert Marine Museum, Solomons, free: calvertmarinemuseum.com.

May 7 & 8 Take home a piece of history by buying plants raised by Historic Annapolis volunteers, including perennials, annuals, trees, vines and vegetable starts. Sa 10am-4pm, Su noon-4pm, William Paca Garden, Annapolis, RSVP: Annapolis.org.

Pull invasive garlic mustard and then learn to make a homemade pesto with the greens. 11am-noon, Beverly Triton Nature Park, Edgewater, RSVP: 410-222-1978.