Susquehanna State Park, Rock Run Gristmill
Susquehanna State Park Rock Run area 4398 Rock Run Road, Havre de GraceHost: Baltimore Bird Club. Leader: Joe Corcoran, corcoran2921@gmail.com, or 667-231-6453. Description: Trip to the river in Harford County for resident Cerulean and Prothonotary Warblers and a collection of spring migrants. […]