Pacific loon, Gavia pacifica (A) Common loon, Gavia immer Yellow-billed loon, Gavia adamsii (A) Southern storm-petrels Order: ProcellariiformesFamily: Oceanitidae The storm-petrels are the smallest seabirds, relatives of the petrels, feeding on planktonic crustaceans and small fish picked from the surface, typically while hovering. The flight is fluttering and sometimes bat-like. Until 2018, these species were included with the other storm-petrels in family Hydrobatidae. Wilson's storm-petrel, Oceanites oceanicus (P) (A) 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 (A) Band-rumped storm-petrel, Hydrobates castro (A) 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 (P) (A) Trindade petrel Pterodroma arminjoniana (A) Black-capped petrel, Pterodroma hasitata (A) Cory’s shearwater, Calonectris diomedea (A) Great shearwater, Ardenna gravis (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 colored 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 (A) Anhingas Order: SuliformesFamily: Anhingidae Anhingas are cormorant-like water birds with very long necks and long straight beaks. They are fish eaters which often swim with only their neck above the water. Anhinga, Anhinga anhinga (A) Cormorants and shags 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