The lands surrounding Liberty Reservoir are forested, and all the usual forest-dwelling bird species can be found here in appropriate seasons: warblers, flycatchers, vireos, thrushes, woodpeckers, and more. Swallows, including Cliff, can be found in the summer months. Wood Ducks nest at the Reservoir. The greatest diversity of species is found at the north end of the Reservoir, near MD Route 140/Baltimore Boulevard. See the eBird bar chart at the links above for full species list at each eBird hotspot, with seasons of occurrence and abundance. The entire CWMA is worth exploring.
Notable breeding birds in this area include :