Actions Bay Bird Brackish Chesapeake Duck Estuary Fowl Gender /Race Maryland Swim Water Waterfowl Wildlife Winter america american anas americana anatidae animals anseriformes atlantic baldpate beak birds body choptank coastal cold color colour dabbling drake ducks eastern edge environmental estuary eye eyes feathered feed feeding flock flyway fowl frigid full gregarious group habitat horizontal interacting male many migrate migrating natural nature north numbers/ fractions ornithology outdoors portrait protected river shoreline species swimming tawny temperature tide together togetherness various watch watches watching waters waves widgeon wild winged