Celebrate Spring and Earth Day along the shady, lush, and birdy northern end of the Sligo Creek trail. We’ll begin at the stormwater pond by the Sligo trail at Kemp Mill to see whether waterfowl, herons, and wading birds are about (and also visit the ponds at Dennis Avenue if time permits). This area is good for songbirds, especially thrushes, vireos, and warblers. We’ll walk mostly on paved trails, covering upwards of 3 miles. Meet in the parking lot at the Lamberton Shopping Center (off Arcola Drive in the Kemp Mill neighborhood) at 7:30 a.m. Limit: 12. LEADER: Angela Atwood-Moore at [email protected].