Northern storm-petrels Order: ProcellariiformesFamily: Hydrobatidae Though the members of this family are similar in many respects to the southern storm-petrels, including their general appearance and habits, there are enough genetic differences to warrant their placement in a separate family. Leach's storm-petrel, Hydrobates leucorhous Shearwaters and petrels Order: ProcellariiformesFamily: Procellariidae The procellariids are the main group of medium-sized "true petrels", characterized by united nostrils with medium septum and a long outer functional primary. Northern fulmar, Fulmarus glacialis Cory's shearwater, Calonectris diomedea (A) Sooty shearwater, Ardenna griseus Great shearwater, Ardenna gravis Manx shearwater, Puffinus puffinus Audubon's shearwater, Puffinus lherminieri (A) Storks Order: CiconiiformesFamily: Ciconiidae Storks are large, heavy, long-legged, long-necked wading birds with long stout bills and wide wingspans. They lack the powder down that other wading birds such as herons, spoonbills and ibises use to clean off fish slime. Storks lack a pharynx and are mute. Wood stork, Mycteria americana (A) Frigatebirds Order: SuliformesFamily: Fregatidae Frigatebirds are large seabirds usually found over tropical oceans. They are large, black, or black-and-white, with long wings and deeply forked tails. The males have coloured inflatable throat pouches. They do not swim or walk and cannot take off from a flat surface. Having the largest wingspan-to-body-weight ratio of any bird, they are essentially aerial, able to stay aloft for more than a week. Magnificent frigatebird, Fregata magnificens (A) Boobies and gannets Order: SuliformesFamily: Sulidae The sulids comprise the gannets and boobies. Both groups are medium-large coastal seabirds that plunge-dive for fish. Brown booby, Sula leucogaster (A) Northern gannet, Morus bassanus Cormorants and shags Order: SuliformesFamily: Phalacrocoracidae Cormorants are medium-to-large aquatic birds, usually with mainly dark plumage and areas of coloured skin on the face. The bill is long, thin, and sharply hooked. Their feet are four-toed and webbed. Great cormorant, Phalacrocorax carbo Double-crested cormorant, Nannopterum auritum Pelicans 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. American white pelican, Pelecanus erythrorhynchos (R) Brown pelican, Pelecanus occidentalis (A) Herons, egrets, and bitterns 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. American bittern,