The mangrove black hawk, Buteogallus anthracinus subtilis, is a bird of prey in the family Accipitridae. Briefly treated as a distinct species, Buteogallus subtilis, recent evidence strongly suggests it should be considered a subspecies of the common black hawk (Buteogallus anthracinus). This is a mainly coastal bird of Pacific mangrove swamps, estuaries and adjacent dry open woodland, which builds a large stick nest in a mangrove tree, and usually lays one dark-blotched whitish egg.