the upper mandible. They are strong, acrobatic fliers. Pomarine jaeger, Stercorarius pomarinus (C) Parasitic jaeger, Stercorarius parasiticus (A) Long-tailed jaeger, Stercorarius longicaudus (C) Gulls, terns, and skimmers 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. Black-legged kittiwake, Rissa tridactyla Ivory gull, Pagophila eburnea (A) Sabine's gull, Xema sabini Bonaparte's gull, Chroicocephalus philadelphia Black-headed gull, Chroicocephalus ridibundus (A) Little gull, Hydrocoloeus minutus Ross's gull, Rhodostethia rosea (A) Laughing gull, Leucophaeus atricilla Franklin's gull, Leucophaeus pipixcan Short-billed gull, Larus brachyrhynchus (A) Ring-billed gull, Larus delawarensis California gull, Larus californicus Herring gull, Larus argentatus Iceland gull, Larus glaucoides Lesser black-backed gull, Larus fuscus Slaty-backed gull, Larus schistisagus (A) Glaucous-winged gull, Larus glaucescens (A) Glaucous gull, Larus hyperboreus Great black-backed gull, Larus marinus Sooty tern, Onychoprion fuscata (A) Least tern, Sternula antillarum Caspian tern, Hydroprogne caspia Black tern, Chlidonias niger Common tern, Sterna hirundo Forster's tern, Sterna forsteri Black skimmer, Rynchops niger (A) Loons 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. Red-throated loon, Gavia stellata Pacific loon, Gavia pacifica Common loon, Gavia immer Yellow-billed loon, Gavia adamsii (A) Northern storm-petrels Order: ProcellariiformesFamily: Hydrobatidae 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. Band-rumped storm-petrel, Hydrobates castro (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 (C) 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