Order: CharadriiformesFamily: Laridae  Laridae is a family of medium to large seabirds and includes gulls, terns, kittiwakes, and skimmers. They are typically gray or white, often with black markings on the head or wings. They have stout, longish bills and webbed feet. Order: GaviiformesFamily: Gaviidae  Loons are aquatic birds the size of a large duck, to which they are unrelated. Their plumage is largely gray or black, and they have spear-shaped bills. Loons swim well and fly adequately, but are almost hopeless on land, because their legs are placed towards the rear of the body. Order: SuliformesFamily: Phalacrocoracidae  Cormorants are medium-to-large aquatic birds, usually with mainly dark plumage and areas of colored skin on the face. The bill is long, thin, and sharply hooked. Their feet are four-toed and webbed, a distinguishing feature among the order Suliformes. Order: PelecaniformesFamily: Pelecanidae  Pelicans are very large water birds with a distinctive pouch under their beak. Like other birds in the order Pelecaniformes, they have four webbed toes. Order: PelecaniformesFamily: Ardeidae  The family Ardeidae contains the herons, egrets, and bitterns. Herons and egrets are medium to large wading birds with long necks and legs. Bitterns tend to be shorter necked and more secretive. Members of Ardeidae fly with their necks retracted, unlike other long-necked birds such as storks, ibises, and spoonbills. Order: "Cathartiformes"Family: Cathartidae  The New World vultures are not closely related to Old World vultures, but superficially resemble them because of convergent evolution. Like the Old World vultures, they are scavengers, however, unlike Old World vultures, which find carcasses by sight, New World vultures have a good sense of smell with which they locate carcasses. Order: AccipitriformesFamily: Pandionidae  Pandionidae is a monotypic family of fish-eating birds of prey, possessing a very large, powerful hooked beak for tearing flesh from their prey, strong legs, powerful talons, and keen eyesight. Order: AccipitriformesFamily: Accipitridae  Accipitridae is a family of birds of prey, which includes hawks, eagles, kites, harriers, and Old World vultures.