Chart of waterfowl, by species, observed on retention ponds associated with commercial poultry facilities in Dorchester and Somerset counties, Maryland

The number of waterfowl, by species, observed on retention ponds associated with commercial poultry facilities in Dorchester and Somerset counties, Maryland, from 20 September 2022 to 31 March 2023. Species are identified via the standard four-letter alpha codes (BWTE, blue-winged teal; GADW, gadwall; MALL, mallard; NOPI, northern pintail; NSHO, northern shoveler; BUFF, bufflehead; HOME, hooded merganser; RUDU, ruddy duck; CANG, Canada goose; and WODU, wood duck). All data supporting this figure are available from Sullivan et al.