This list is based on the Official List of Maryland Birds, 7 September 1998 version, compiled by the MD/DC Records Committee of the Maryland Ornithological Society. Species ordering and names conform to the Check-List of North American Birds, 7th edition, by the American Ornithologist's Union. This list includes vagrants, accidentals, and species considered extirpated or extinct.
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Red-throated loon Gavia stellata
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Common loon Gavia immer
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Pied-billed grebe Podilymbus podiceps
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Horned grebe Podiceps auritus
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Red-necked grebe Podiceps grisegena
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Eared grebe Podiceps nigricollis
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Western grebe Aechmophorus occidentalis
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Yellow-nosed albatross Thalassarche chlororhynchos
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Northern fulmar Fulmarus glacialis
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Black-capped petrel Pterodroma hasitata
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Cory's shearwater Calonectris diomedea
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Greater shearwater Puffinus gravis
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Sooty shearwater Puffinus griseus
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Manx shearwater Puffinus puffinus
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Audubon's shearwater Puffinus lherminieri
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Wilson's storm-petrel Oceanites oceanicus
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White-faced storm-petrel Pelagodroma marina
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Leach's storm-petrel Oceanodroma leucorhoa
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Northern gannet Morus bassanus
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American white pelican Pelecanus erythrorhynchos
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Brown pelican Pelecanus occidentalis
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Double-crested cormorant Phalacrocorax auritus
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Great cormorant Phalacrocorax carbo
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Anhinga Anhinga anhinga
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Magnificent frigatebird Fregata magnificens
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American bittern Botaurus lentiginosus
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Least bittern Ixobrychus exilis
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Great blue heron Ardea herodias
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Great egret Ardea alba
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Snowy egret Egretta thula
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Little blue heron Egretta caerulea
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Tricolored heron Egretta tricolor
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Cattle egret Bubulcus ibis
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Green heron Butorides virescens
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Black-crowned night-heron Nycticorax nycticorax
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Yellow-crowned night-heron Nyctanassa violacea
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White ibis Eudocimus albus
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Glossy ibis Plegadis falcinellus
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Roseate spoonbill Ajaia ajaja
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Wood stork Mycteria americana
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Black vulture Coragyps atratus
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Turkey vulture Cathartes aura
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Black-bellied whistling-duck Dendrocygna autumnalis
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Fulvous whistling-duck Dendrocygna bicolor
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Greater white-fronted goose Anser albifrons
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Snow goose Chen caerulescens
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Ross's goose Chen rossii
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Canada goose Branta canadensis
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Brant Branta bernicla
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Mute swan Cygnus olor
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Tundra swan Cygnus columbianus
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Trumpeter swan Cygnus buccinator
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Wood duck Aix sponsa
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Gadwall Anas strepera
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Eurasian wigeon Anas penelope
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American wigeon Anas americana
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American black duck Anas rubripes
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Mallard Anas platyrhynchos
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Blue-winged teal Anas discors
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Cinnamon teal Anas cyanoptera
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Northern shoveler Anas clypeata
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Northern pintail Anas acuta
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Green-winged teal Anas crecca
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Canvasback Aythya valisineria
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Redhead Aythya americana
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Ring-necked duck Aythya collaris
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Tufted duck Aythya fuligula
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Greater scaup Aythya marila
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Lesser scaup Aythya affinis
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King eider Somateria spectabilis
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Common eider Somateria mollissima
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Harlequin duck Histrionicus histrionicus
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Surf scoter Melanitta perspicillata
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White-winged scoter Melanitta fusca
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Black scoter Melanitta nigra
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Oldsquaw Clangula hyemalis
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Bufflehead Bucephala albeola
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Common goldeneye Bucephala clangula
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Barrow's goldeneye Bucephala islandica
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Ooded merganser Lophodytes cucullatus
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Common merganser Mergus merganser
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Red-breasted merganser Mergus serrator
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Masked duck Nomonyx dominicus
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Ruddy duck Oxyura jamaicensis
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Osprey Pandion haliaetus
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Swallow-tailed kite Elanoides forficatus
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Mississippi kite Ictinia mississippiensis
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Bald eagle Haliaeetus leucocephalus
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Northern harrier Circus cyaneus
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Sharp-shinned hawk Accipiter striatus
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Cooper's hawk Accipiter cooperii
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Northern goshawk Accipiter gentilis
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Red-shouldered hawk Buteo lineatus
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Broad-winged hawk Buteo platypterus
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Swainson's hawk Buteo swainsoni
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Red-tailed hawk Buteo jamaicensis
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Rough-legged hawk Buteo lagopus
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Golden eagle Aquila chrysaetos
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American kestrel Falco sparverius
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Merlin Falco columbarius
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Gyrfalcon Falco rusticolus
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Peregrine falcon Falco peregrinus
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Ring-necked pheasant Phasianus colchicus
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Ruffed grouse Bonasa umbellus
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Greater prairie-chicken Tympanuchus cupido
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Wild turkey Meleagris gallopavo
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Northern bobwhite Colinus virginianus
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Yellow rail Coturnicops noveboracensis
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Black rail Laterallus jamaicensis
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Corn crake Crex crex
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Clapper rail Rallus longirostris
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King rail Rallus elegans
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Virginia rail Rallus limicola
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Sora Porzana carolina
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Purple gallinule Porphyrula martinica
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Common moorhen Gallinula chloropus
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American coot Fulica americana
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Limpkin Aramus guarauna
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Sandhill crane Grus canadensis
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Black-bellied plover Pluvialis squatarola
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American golden-plover Pluvialis dominica
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Wilson's plover Charadrius wilsonia
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Semipalmated plover Charadrius semipalmatus
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Piping plover Charadrius melodus
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Killdeer Charadrius vociferus
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American oystercatcher Haematopus palliatus
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Black-necked stilt Himantopus mexicanus
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American avocet Recurvirostra americana
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Greater yellowlegs Tringa melanoleuca
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Lesser yellowlegs Tringa flavipes
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Solitary sandpiper Tringa solitaria
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Willet Catoptrophorus semipalmatus
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Spotted sandpiper Actitis macularia
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Upland sandpiper Bartramia longicauda
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Eskimo curlew Numenius borealis
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Whimbrel Numenius phaeopus
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Long-billed curlew Numenius americanus
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Hudsonian godwit Limosa haemastica
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Marbled godwit Limosa fedoa
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Ruddy turnstone Arenaria interpres
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Red knot Calidris canutus
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Sanderling Calidris alba
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Semipalmated sandpiper Calidris pusilla
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Western sandpiper Calidris mauri
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Red-necked stint Calidris ruficollis
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Little stint Calidris minuta
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Least sandpiper Calidris minutilla
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White-rumped sandpiper Calidris fuscicollis
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Baird's sandpiper Calidris bairdii
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Pectoral sandpiper Calidris melanotos
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Purple sandpiper Calidris maritima
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Dunlin Calidris alpina
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Curlew sandpiper Calidris ferruginea
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Stilt sandpiper Calidris himantopus
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Buff-breasted sandpiper Tryngites subruficollis
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Ruff Philomachus pugnax
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Short-billed dowitcher Limnodromus griseus
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Long-billed dowitcher Limnodromus scolopaceus
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Common snipe Gallinago gallinago
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American woodcock Scolopax minor
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Wilson's phalarope Phalaropus tricolor
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Red-necked phalarope Phalaropus lobatus
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Red phalarope Phalaropus fulicaria
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Great skua Catharacta skua
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South polar skua Catharacta maccormicki
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Pomarine jaeger Stercorarius pomarinus
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Parasitic jaeger Stercorarius parasiticus
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Long-tailed jaeger Stercorarius longicaudus
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Laughing gull Larus atricilla
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Franklin's gull Larus pipixcan
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Little gull Larus minutus
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Black-headed gull Larus ridibundus
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Bonaparte's gull Larus philadelphia
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Mew gull Larus canus
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Ring-billed gull Larus delawarensis
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California gull Larus californicus
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Herring gull Larus argentatus
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Yellow-legged gull Larus cachinnans
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Iceland gull Larus glaucoides
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Lesser black-backed gull Larus fuscus
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Glaucous gull Larus hyperboreus
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Great black-backed gull Larus marinus
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Sabine's gull Xema sabini
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Black-legged kittiwake Rissa tridactyla
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Ross's gull Rhodostethia rosea
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Gull-billed tern Sterna nilotica
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Caspian tern Sterna caspia
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Royal tern Sterna maxima
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Sandwich tern Sterna sandvicensis
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Roseate tern Sterna dougallii
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Common tern Sterna hirundo
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Arctic tern Sterna paradisaea
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Forster's tern Sterna forsteri
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Least tern Sterna antillarum
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Bridled tern Sterna anaethetus
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Sooty tern Sterna fuscata
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Black tern Chlidonias niger
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Black skimmer Rynchops niger
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Dovekie Alle alle
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Common murre Uria aalge
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Thick-billed murre Uria lomvia
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Razorbill Alca torda
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Atlantic puffin Fratercula arctica
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Rock dove Columba livia
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White-winged dove Zenaida asiatica
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Mourning dove Zenaida macroura
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Passenger pigeon Ectopistes migratorius
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Common ground-dove Columbina passerina
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Carolina parakeet Conuropsis carolinensis
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Black-billed cuckoo Coccyzus erythropthalmus
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Yellow-billed cuckoo Coccyzus americanus
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Groove-billed ani Crotophaga sulcirostris
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Barn owl Tyto alba
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Eastern screech-owl Otus asio
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Great horned owl Bubo virginianus
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nowy owl Nyctea scandiaca
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Burrowing owl Athene cunicularia
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Barred owl Strix varia
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Long-eared owl Asio otus
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Short-eared owl Asio flammeus
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Northern saw-whet owl Aegolius acadicus
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Common nighthawk Chordeiles minor
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Chuck-will's-widow Caprimulgus carolinensis
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Whip-poor-will Caprimulgus vociferus
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Chimney swift Chaetura pelagica
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Ruby-throated hummingbird Archilochus colubris
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Rufous hummingbird Selasphorus rufus
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Belted kingfisher Ceryle alcyon
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Red-headed woodpecker Melanerpes erythrocephalus
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Red-bellied woodpecker Melanerpes carolinus
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Yellow-bellied sapsucker Sphyrapicus varius
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Downy woodpecker Picoides pubescens
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Hairy woodpecker Picoides villosus
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Red-cockaded woodpecker Picoides borealis
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Northern flicker Colaptes auratus
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Pileated woodpecker Dryocopus pileatus
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Olive-sided flycatcher Contopus cooperi
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Eastern wood-pewee Contopus virens
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Yellow-bellied flycatcher Empidonax flaviventris
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Acadian flycatcher Empidonax virescens
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Alder flycatcher Empidonax alnorum
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Willow flycatcher Empidonax traillii
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Least flycatcher Empidonax minimus
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Hammond's flycatcher Empidonax hammondii
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Eastern phoebe Sayornis phoebe
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Vermilion flycatcher Pyrocephalus rubinus
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Ash-throated flycatcher Myiarchus cinerascens
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Great crested flycatcher Myiarchus crinitus
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Western kingbird Tyrannus verticalis
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Eastern kingbird Tyrannus tyrannus
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Gray kingbird Tyrannus dominicensis
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Scissor-tailed flycatcher Tyrannus forficatus
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Fork-tailed flycatcher Tyrannus savana
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Northern shrike Lanius excubitor
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Loggerhead shrike Lanius ludovicianus
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White-eyed vireo Vireo griseus
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Yellow-throated vireo Vireo flavifrons
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Blue-headed vireo Vireo solitarius
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Warbling vireo Vireo gilvus
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Philadelphia vireo Vireo philadelphicus
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Red-eyed vireo Vireo olivaceus
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Blue jay Cyanocitta cristata
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American crow Corvus brachyrhynchos
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Fish crow Corvus ossifragus
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Common raven Corvus corax
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Horned lark Eremophila alpestris
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Purple martin Progne subis
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Tree swallow Tachycineta bicolor
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Northern rough-winged swallow Stelgidopteryx serripennis
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Bank swallow Riparia riparia
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Cliff swallow Petrochelidon pyrrhonota
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Barn swallow Hirundo rustica
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Carolina chickadee Poecile carolinensis
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Black-capped chickadee Poecile atricapillus
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Boreal chickadee Poecile hudsonicus
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Tufted titmouse Baeolophus bicolor
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Red-breasted nuthatch Sitta canadensis
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White-breasted nuthatch Sitta carolinensis
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Brown-headed nuthatch Sitta pusilla
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Brown creeper Certhia americana
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Rock wren Salpinctes obsoletus
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Carolina wren Thryothorus ludovicianus
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Bewick's wren Thryomanes bewickii
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House wren Troglodytes aedon
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Winter wren Troglodytes troglodytes
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Sedge wren Cistothorus platensis
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Marsh wren Cistothorus palustris
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Golden-crowned kinglet Regulus satrapa
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Ruby-crowned kinglet Regulus calendula
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Blue-gray gnatcatcher Polioptila caerulea
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Eastern bluebird Sialia sialis
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Mountain bluebird Sialia currucoides
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Townsend's solitaire Myadestes townsendi
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Veery Catharus fuscescens
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Gray-cheeked thrush Catharus minimus
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Bicknell's thrush Catharus bicknelli
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Swainson's thrush Catharus ustulatus
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Hermit thrush Catharus guttatus
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Wood thrush Hylocichla mustelina
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American robin Turdus migratorius
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Varied thrush Ixoreus naevius
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Gray catbird Dumetella carolinensis
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Northern mockingbird Mimus polyglottos
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Sage thrasher Oreoscoptes montanus
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Brown thrasher Toxostoma rufum
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European starling Sturnus vulgaris
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American pipit Anthus rubescens
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Bohemian waxwing Bombycilla garrulus
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Cedar waxwing Bombycilla cedrorum
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Blue-winged warbler Vermivora pinus
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Golden-winged warbler Vermivora chrysoptera
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Tennessee warbler Vermivora peregrina
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Orange-crowned warbler Vermivora celata
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Nashville warbler Vermivora ruficapilla
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Northern parula Parula americana
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Yellow warbler Dendroica petechia
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Chestnut-sided warbler Dendroica pensylvanica
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Magnolia warbler Dendroica magnolia
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Cape May warbler Dendroica tigrina
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Black-throated blue warbler Dendroica caerulescens
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Yellow-rumped warbler Dendroica coronata
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Black-throated gray warbler Dendroica nigrescens
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Black-throated green warbler Dendroica virens
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Blackburnian warbler Dendroica fusca
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Yellow-throated warbler Dendroica dominica
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Pine warbler Dendroica pinus
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Prairie warbler Dendroica discolor
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Palm warbler Dendroica palmarum
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Bay-breasted warbler Dendroica castanea
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Blackpoll warbler Dendroica striata
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Cerulean warbler Dendroica cerulea
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Black-and-white warbler Mniotilta varia
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American redstart Setophaga ruticilla
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Prothonotary warbler Protonotaria citrea
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Worm-eating warbler Helmitheros vermivorus
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Swainson's warbler Limnothlypis swainsonii
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Ovenbird Seiurus aurocapillus
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Northern waterthrush Seiurus noveboracensis
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Louisiana waterthrush Seiurus motacilla
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Kentucky warbler Oporornis formosus
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Connecticut warbler Oporornis agilis
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Mourning warbler Oporornis philadelphia
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Common yellowthroat Geothlypis trichas
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Hooded warbler Wilsonia citrina
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Wilson's warbler Wilsonia pusilla
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Canada warbler Wilsonia canadensis
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Yellow-breasted chat Icteria virens
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Summer tanager Piranga rubra
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Scarlet tanager Piranga olivacea
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Western tanager Piranga ludoviciana
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Spotted towhee Pipilo maculatus
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Eastern towhee Pipilo erythrophthalmus
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Bachman's sparrow Aimophila aestivalis
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American tree sparrow Spizella arborea
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Chipping sparrow Spizella passerina
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Clay-colored sparrow Spizella pallida
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Field sparrow Spizella pusilla
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Vesper sparrow Pooecetes gramineus
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Lark sparrow Chondestes grammacus
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Lark bunting Calamospiza melanocorys
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Savannah sparrow Passerculus sandwichensis
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Grasshopper sparrow Ammodramus savannarum
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Baird's sparrow Ammodramus bairdii
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Henslow's sparrow Ammodramus henslowii
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Le Conte's sparrow Ammodramus leconteii
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Nelson's sharp-tailed sparrow Ammodramus nelsoni
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Saltmarsh sharp-tailed sparrow Ammodramus caudacutus
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Seaside sparrow Ammodramus maritimus
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Fox sparrow Passerella iliaca
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Song sparrow Melospiza melodia
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Lincoln's sparrow Melospiza lincolnii
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Swamp sparrow Melospiza georgiana
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White-throated sparrow Zonotrichia albicollis
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Harris' sparrow Zonotrichia querula
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White-crowned sparrow Zonotrichia leucophrys
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Dark-eyed junco Junco hyemalis
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Lapland longspur Calcarius lapponicus
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Smith's longspur Calcarius pictus
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Chestnut-collared longspur Calcarius ornatus
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Snow bunting Plectrophenax nivalis
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Northern cardinal Cardinalis cardinalis
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Rose-breasted grosbeak Pheucticus ludovicianus
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Black-headed grosbeak Pheucticus melanocephalus
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Blue grosbeak Guiraca caerulea
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Lazuli bunting Passerina amoena
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Indigo bunting Passerina cyanea
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Painted bunting Passerina ciris
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Dickcissel Spiza americana
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Bobolink Dolichonyx oryzivorus
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Red-winged blackbird Agelaius phoeniceus
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Eastern meadowlark turnella magna
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Yellow-headed blackbird Xanthocephalus xanthocephalus
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Rusty blackbird Euphagus carolinus
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Brewer's blackbird Euphagus cyanocephalus
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Common grackle Quiscalus quiscula
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Boat-tailed grackle Quiscalus major
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Brown-headed cowbird Molothrus ater
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Orchard oriole Icterus spurius
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Baltimore oriole Icterus galbula
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Bullock's oriole Icterus bullockii
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Pine grosbeak Pinicola enucleator
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Purple finch Carpodacus purpureus
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House finch Carpodacus mexicanus
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Red crossbill Loxia curvirostra
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White-winged crossbill Loxia leucoptera
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Common redpoll Carduelis flammea
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Hoary redpoll Carduelis hornemanni
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Pine siskin Carduelis pinus
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American goldfinch Carduelis tristis
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Evening grosbeak Coccothraustes vespertinus
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House sparrow Passer domesticus