List of birds of Guam

Order: AnseriformesFamily: Anatidae Anatidae includes the ducks and most duck-like waterfowl, such as geese and swans. These birds are adapted to an aquatic existence with webbed feet, flattened bills, and feathers that are excellent at shedding water due to an oily coating. • Tundra swan, Cygnus columbianus (A) • Garganey, Spatula querquedula (A) • Northern shoveler, Spatula clypeata (A) • Gadwall, Mareca strepera • Eurasian wigeon, Mareca penelope • American wigeon, Mareca americana • Eastern spot-billed duck, Anas zonorhyncha (A) • Mallard, Anas platyrhynchos • Northern pintail, Anas acuta (A) • Green-winged teal, Anas crecca • Common pochard, Aythya ferina (A) • Tufted duck, Aythya fuligula • Greater scaup, Aythya marila (A) • Surf scoter, Melanitta perspicillata (A) ==Megapodes==

Order: GalliformesFamily: Megapodiidae The Megapodiidae are stocky, medium-large chicken-like birds with small heads and large feet. All but the malleefowl occupy jungle habitats and most have brown or black coloring. • Micronesian scrubfowl, Megapodius laperouse (Ex) ==Pheasants, grouse, and allies==

Order: GalliformesFamily: Phasianidae The Phasianidae are a family of terrestrial birds which consists of quails, partridges, snowcocks, francolins, spurfowls, tragopans, monals, pheasants, peafowls, and jungle fowls. In general, they are plump (although they vary in size) and have broad, relatively short wings. • Blue-breasted quail, Coturnix chinensis (I) • Black francolin, Francolinus francolinus (I) • Red junglefowl, Gallus gallus (I) ==Pigeons and doves==

Order: ColumbiformesFamily: Columbidae Pigeons and doves are stout-bodied birds with short necks and short slender bills with a fleshy cere. • Rock pigeon, Columba livia (I) • Philippine collared-dove, Streptopelia dusumieri (I) • White-throated ground dove, Alopecoenas xanthonurus • Mariana fruit-dove, Ptilinopus roseicapilla (Ex) ==Cuckoos==

Order: CuculiformesFamily: Cuculidae The family Cuculidae includes cuckoos, roadrunners, and anis. These birds are of variable size with slender bodies, long tails, and strong legs. • Chestnut-winged cuckoo, Clamator coromandus (A) • Long-tailed koel, Urodynamis taitensis (A) ==Swifts==

Order: CaprimulgiformesFamily: Apodidae Swifts are small birds which spend the majority of their lives flying. These birds have very short legs and never settle voluntarily on the ground, perching instead only on vertical surfaces. Many swifts have long swept-back wings which resemble a crescent or boomerang. • White-throated needletail, Hirundapus caudacutus (A) • Uniform swiftlet, Aerodramus vanikorensis • Mariana swiftlet, Aerodramus bartschi • Caroline Islands swiftlet, Aerodramus inquietus • Pacific swift, Apus pacificus ==Rails, gallinules, and coots==

Order: GruiformesFamily: Rallidae Rallidae is a large family of small to medium-sized birds which includes the rails, crakes, coots, and gallinules. Typically they inhabit dense vegetation in damp environments near lakes, swamps, or rivers. In general they are shy and secretive birds, making them difficult to observe. Most species have strong legs and long toes which are well adapted to soft uneven surfaces. They tend to have short, rounded wings and to be weak fliers. The Guam rail was formerly extinct in the wild but has been reintroduced to Rota and Cocos Island near Guam. • Guam rail, Gallirallus owstoni (End) • Eurasian moorhen, Gallinula chloropus • Eurasian coot, Fulica atra (A) • White-browed crake, Poliolimnas cinereus (Ex) ==Stilts and avocets==

Order: CharadriiformesFamily: Recurvirostridae Recurvirostridae is a family of large wading birds which includes the avocets and stilts. The stilts have extremely long legs and long, thin, straight bills. • Black-winged stilt, Himantopus himantopus ==Oystercatchers==

Order: CharadriiformesFamily: Haematopodidae The oystercatchers are large and noisy plover-like birds, with strong bills used for smashing or prising open molluscs. • Eurasian oystercatcher, Haematopus ostralegus (A) ==Plovers and lapwings==

Order: CharadriiformesFamily: Charadriidae The family Charadriidae includes the plovers, dotterels, and lapwings. They are small to medium-sized birds with compact bodies, short thick necks, and long, usually pointed, wings. They are found in open country worldwide, mostly in habitats near water. • Black-bellied plover, Pluvialis squatarola • Pacific golden-plover, Pluvialis fulva • Lesser sand-plover, Charadrius mongolus • Greater sand-plover, Charadrius leschenaultii • Kentish plover, Charadrius alexandrinus • Common ringed plover, Charadrius hiaticula • Little ringed plover, Charadrius dubius ==Sandpipers and allies==

Order: CharadriiformesFamily: Scolopacidae Scolopacidae is a large diverse family of small to medium-sized shorebirds including the sandpipers, curlews, godwits, shanks, tattlers, woodcocks, snipes, dowitchers, and phalaropes. The majority of these species eat small invertebrates picked out of the mud or soil. Variation in length of legs and bills enables multiple species to feed in the same habitat, particularly on the coast, without direct competition for food. • Bristle-thighed curlew, Numenius tahitiensis • Whimbrel, Numenius phaeopus • Little curlew, Numenius minutus • Far Eastern curlew, Numenius madagascariensis • Eurasian curlew, Numenius arquata • Bar-tailed godwit, Limosa lapponica • Black-tailed godwit, Limosa limosa • Ruddy turnstone, Arenaria interpres • Great knot, Calidris tenuirostris • Red knot, Calidris canutus (A) • Ruff, Calidris pugnax • Sharp-tailed sandpiper, Calidris acuminata • Curlew sandpiper, Calidris ferruginea • Temminck's stint, Calidris temminckii (A) • Long-toed stint, Calidris subminuta • Red-necked stint, Calidris ruficollis • Sanderling, Calidris alba • Dunlin, Calidris alpina • Pectoral sandpiper, Calidris melanotos • Long-billed dowitcher, Limnodromus scolopaceus • Latham's snipe, Gallinago hardwickii (A) • Common snipe, Gallinago gallinago • Swinhoe's snipe, Gallinago megala • Terek sandpiper, Xenus cinereus • Wilson's phalarope, Phalaropus tricolor (A) • Common sandpiper, Actitis hypoleucos • Gray-tailed tattler, Tringa brevipes • Wandering tattler, Tringa incana • Common greenshank, Tringa nebularia • Marsh sandpiper, Tringa stagnatilis • Wood sandpiper, Tringa glareola • Common redshank, Tringa totanus ==Pratincoles and coursers==

Order: CharadriiformesFamily: Glareolidae The pratincoles have short legs, very long pointed wings, and long forked tails. Their most unusual feature for birds classed as waders is that they typically hunt their insect prey on the wing like swallows. • Oriental pratincole, Glareola maldivarum ==Gulls, terns, and skimmers==

Order: CharadriiformesFamily: Laridae Laridae is a family of medium to large seabirds, the gulls, terns, and skimmers. Gulls are typically gray or white, often with black markings on the head or wings. They have stout, longish bills and webbed feet. Terns are a group of generally medium to large seabirds typically with gray or white plumage, often with black markings on the head. Most terns hunt fish by diving but some pick insects off the surface of fresh water. Terns are generally long-lived birds, with several species known to live in excess of 30 years. • Black-headed gull, Chroicocephalus ridibundus • Laughing gull, Leucophaeus atricilla (A) • Slaty-backed gull, Larus schistisagus (A) • Brown noddy, Anous stolidus • Black noddy, Anous minutus • White tern, Gygis alba • Sooty tern, Onychoprion fuscatus • Little tern, Sternula albifrons • Gull-billed tern, Gelochelidon nilotica (A) • White-winged tern, Chlidonias leucopterus • Whiskered tern, Chlidonias hybrida • Black-naped tern, Sterna sumatrana • Common tern, Sterna hirundo • Great crested tern, Thalasseus bergii ==Tropicbirds==

Order: PhaethontiformesFamily: Phaethontidae Tropicbirds are slender white birds of tropical oceans, with exceptionally long central tail feathers. Their heads and long wings have black markings. • White-tailed tropicbird, Phaethon lepturus • Red-tailed tropicbird, Phaethon rubricauda ==Northern storm-petrels==

Order: ProcellariiformesFamily: Hydrobatidae The northern storm-petrels are relatives of the petrels and are the smallest seabirds. They feed on planktonic crustaceans and small fish picked from the surface, typically while hovering. The flight is fluttering and sometimes bat-like. • Leach's storm-petrel, Hydrobates leucorhous • Matsudaira's storm-petrel, Hydrobates matsudairae ==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. • Juan Fernandez petrel, Pterodroma externa • Tahiti petrel, Pseudobulweria rostrata • Streaked Shearwater, Calonectris leucomelas • Wedge-tailed shearwater, Ardenna pacificus • Short-tailed shearwater, Ardenna tenuirostris • Newell's shearwater, Puffinus newelli (A) • Tropical shearwater, Puffinus bailloni ==Frigatebirds==

Order: SuliformesFamily: Fregatidae Frigatebirds are large seabirds usually found over tropical oceans. They are large, black and white, or completely black, 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. • Great frigatebird, Fregata minor ==Boobies and gannets==

Order: SuliformesFamily: Sulidae The sulids comprise the gannets and boobies. Both groups are medium to large coastal seabirds that plunge-dive for fish. • Masked booby, Sula dactylatra • Brown booby, Sula leucogaster • Red-footed booby, Sula sula ==Herons, egrets, and bitterns==

Order: PelecaniformesFamily: Ardeidae The family Ardeidae contains the bitterns, herons, and egrets. Herons and egrets are medium to large wading birds with long necks and legs. Bitterns tend to be shorter necked and more wary. Members of Ardeidae fly with their necks retracted, unlike other long-necked birds such as storks, ibises, and spoonbills. • Yellow bittern, Botaurus sinensis • Black bittern, Botaurus flavicollis (A) • Gray heron, Ardea cinerea • Great egret, Ardea alba • Intermediate egret, Ardea intermedia • Little egret, Egretta garzetta • Pacific reef-heron, Egretta sacra • Cattle egret, Bubulcus ibis • Chinese pond-heron, Ardeola bacchus (A) • Striated heron, Butorides striata • Black-crowned night-heron, Nycticorax nycticorax ==Osprey==

Order: AccipitriformesFamily: Pandionidae The family Pandionidae contains only one species, the osprey. The osprey is a medium-large raptor which is a specialist fish-eater with a worldwide distribution. • Osprey, Pandion haliaetus ==Hawks, eagles, and kites==