1. In Maryland, common "Blackbirds" include Grackles, Cowbirds, and Red-winged Blackbirds

2. Grackles, brown-headed cowbirds, red-winged Blackbirds and starlings form large roosts which create a nuisance in urban areas

3. From the large ravens and crows to the medium-sized grackles to the smaller birds, such as Blackbirds, cowbirds, and starlings