Colorado Birding Society (Cobus)
(Pronounced with accent on first syllable; CO BUS)
Official Checklist of Colorado Birds
(With 505 species)
(Nomenclature: checklist of North American Birds
7th Edition AOU 1998, updated with 58th Supplement)
checklist 072017
**Report Birds to Colorado Birding Society's website: / **
http://coloradobirdingsociety.net
Anseriformes----Screamers, Swans, Geese and Ducks
Anatidae--Ducks, Geese and Swans
Black-bellied Whistling-Duck / ** / Dendrocygna autumnalis / BBWD
Fulvous Whistling-Duck / ** / Dendrocygna bicolor / FUWD
Snow Goose / Anser caerulescens / SNGO
Ross's Goose / Chen rossii / ROGO
Greater White-fronted Goose / Anser albifrons / GWFG
Brant / Branta bernicla / BRAN
Cackling Goose / Branta hutchinsii / CACG
Canada Goose / Branta canadensis / CAGO
Trumpeter Swan / ** / Cygnus buccinator / TRUS
Tundra Swan / ** / Cygnus columbianus / TUSW
Wood Duck / Aix sponsa / WODU
Garganey / Spatula querquesdula / GARG
Blue-winged Teal / Spatula discors / BWTE
Cinnamon Teal / Spatula cyanoptera / CITE
Northern Shoveler / Spatula clypeata / NSHO
Gadwall / Mareca strepera / GADW
Eurasian Wigeon / ** / Mareca penelope / EUWI
American Wigeon / Mareca americana / AMWI
Mallard / Anas platyrhynchos / MALL
American Black Duck / ** / Anas rubripes / ABDU
Mottled Duck / Anas fulvigula / MODU
Northern Pintail / Anas acuta / NOPI
Green-winged Teal / Anas crecca / GWTE
Canvasback / Aythya valisineria / CANV
Redhead / Aythya americana / REDH
Ring-necked Duck / Aythya collaris / RNDU
Tufted Duck / ** / Aythya fuligula / TUDU
Greater Scaup / ** / Aythya marila / GRSC
Lesser Scaup / Aythya affinis / LESC
Harlequin Duck / Histrionicus histrionicus / HARD
Surf Scoter / ** / Melanitta perspicillata / SUSC
White-winged Scoter / ** / Melanitta fusca / WWSC
Black Scoter / ** / Melanitta americana / BLSC
Long-tailed Duck / ** / Clangula hyemalis / LTDU
Bufflehead / Bucephala albeola / BUFF
Common Goldeneye / Bucephala clangula / COGO
Barrow's Goldeneye / ** / Bucephala islandica / BAGO
Hooded Merganser / Lophodytes cucullatus / HOME
Common Merganser / Mergus merganser / COME
Red-breasted Merganser / Mergus serrator / RBME
Ruddy Duck / Oxyura jamaicensis / RUDU
Galliformes----Gallinaceous Birds
Odontophoridae--New World Quail
Northern Bobwhite / Colinus virginianus / NOBO
Scaled Quail / Callipepla squamata / SCQU
Gambel's Quail / Callipepla gambelii / GAQU
Phasianidae--Partridges, Grouse, Turkeys, Old World Quail
Chukar / ** / Alectoris chukar / CHUK
Ring-necked Pheasant / Phasianus colchicus / RNPH
Ruffed Grouse / ** / Bonasa umbellus / RUGR
Greater Sage-Grouse / ** / Centrocercus urophasianus / GRSG
Gunnison Sage-Grouse / ** / Centrocercus minimus / GUSG
White-tailed Ptarmigan / ** / Lagopus leucura / WTPT
Dusky Grouse / ** / Dendragapus obscurus / DUGR
Sharp-tailed Grouse / ** / Tympanuchus phasianellus / STGR
Greater Prairie-Chicken / ** / Tympanuchus cupido / GRPC
Lesser Prairie-Chicken / ** / Tympanuchus pallidicinctus / LEPC
Wild Turkey / Meleagris gallopavo / WITU
Podicipediformes----Grebes
Podicipedidae-Grebes
Pied-billed Grebe / Podilymbus podiceps / PBGR
Horned Grebe / Podiceps auritus / HOGR
Red-necked Grebe / ** / Podiceps grisegena / RNGR
Eared Grebe / Podiceps nigricollis / EAGR
Western Grebe / Aechmophorus occidentalis / WEGR
Clark's Grebe / Aechmophorus clarkii / CLGR
Columbiformes----Pigeons and Doves
Columbidae--Pigeons and Doves
Rock Pigeon / Columba livia / ROPI
Band-tailed Pigeon / ** / Patagioenas fasciata / BTPI
Eurasian Collared-Dove / Streptopelia decaocto / ECDO
Inca Dove / ** / Columbina inca / INDO
Common Ground-Dove / ** / Columbina passerina / CGDO
White-winged Dove / ** / Zenaida asiatica / WWDO
Mourning Dove / Aenaida macroura / MODO
Cuculiformes----Cuckoos and Allies
Cuculidae--Cuckoos, Roadrunners, and Anis
Yellow-billed Cuckoo / ** / Coccyzus americanus / YBCU
Black-billed Cuckoo / ** / Coccyzus erythrophthalmus / BBCU
Greater Roadrunner / ** / Geococcyx californianus / GRRO
Groove-billed Ani / ** / Crotophaga sulcirostris / GBAN
Caprimulgiformes----Nightjars
Caprimulgidae--Nightjars
Lesser Nighthawk5 / ** / Chordeiles acutipennis / LENI
Common Nighthawk / Chordeiles minor / CONI
Common Poorwill / ** / Phalaenoptilus nuttalii / COPO
Eastern Whip-poor-will / ** / Antrostomus vociferus / EWPW
Mexican Whip-poor-will / ** / Antrostomus arizonae / MWPW
Apodiformes----Swifts and Hummingbirds
Apodidae--Swifts
Black Swift / ** / Cypseloides niger / BLSW
Chimney Swift / ** / Chaetura pelagica / CHSW
Vaux's Swift / ** / Chaetura vauxi / VASW
White-throated Swift / Aeronautes saxatalis / WTSW
Trochilidae--Hummingbirds
Mexican Violetear / ** / Colibri thalassinus / MEVI
Rivoli's Hummingbird / ** / Eugenes fulgens / RIHU
Blue-throated Hummingbird / ** / Lampornis clemenciae / BLUH
Ruby-throated Hummingbird / ** / Archilochus colubris / RTHU
Black-chinned Hummingbird / ** / Archilochus alexandri / BCHU
Anna's Hummingbird / ** / Calypte anna / ANHU
Costa's Hummingbird / ** / Calypte costae / COHU
Broad-tailed Hummingbird / Selasphorus platycercus / BTLH
Rufous Hummingbird / ** / Selasphorus rufus / RUHU
Calliope Hummingbird / ** / Selasphorus calliope / CAHU
Broad-billed Hummingbird / ** / Cynanthus latirostris / BBHU
White-eared Hummingbird / ** / Hylocharis leucotis / WEHU
Gruiformes----Rails, Cranes, and Allies
Rallidae--Rails, Gallinules, and Coots
Yellow Rail / ** / Coturnicops noveboracensis / YERA
Black Rail / ** / Laterallus jamaicensis / BLRA
King Rail / ** / Rallus elegans / KIRA
Virginia Rail / Rallus limicola / VIRA
Sora / ** / Porzana carolina / SORA
Purple Gallinule / ** / Porphyrio martinicus / PUGA
Common Gallinule / ** / Gallinula galeata / COGA
American Coot / Fulica americana / AMCO
Gruidae--Typical Cranes
Sandhill Crane / Antigone canadensis / SACR
Whooping Crane / ** / Grus americana / WHCR
Recurvirostridae--Stilts and Avocets
Black-necked Stilt / Himantopus mexicanus / BNST
American Avocet / Recurvirostra americana / AMAV
Charadriiformes----Shorebirds, Gulls, Terns and Allies
Charadriidae--Plovers
Black-bellied Plover / ** / Pluvialis squatarola / BBPL
American Golden-Plover / ** / Pluvialis dominica / AGPL
Snowy Plover / ** / Charadrius nivosus / SNPL
Semipalmated Plover / ** / Charadrius semipalmatus / SEPL
Piping Plover / ** / Charadrius melodus / PIPL
Killdeer / Charadrius vociferus / KILL
Mountain Plover / ** / Charadrius montanus / MOUP
Scolopacidae--Sandpipers
Numeniinae--Curlews
Upland Sandpiper / ** / Bartramia longicauda / UPSA
Whimbrel / ** / Numenius phaeopus / WHIM
Eskimo Curlew / ** / Numenius borealis / ESCU
Long-billed Curlew / ** / Numenius americanus / LBCU
Limosinae--Godwits
Hudsonian Godwit / ** / Limosa haemastica / HUGO
Marbled Godwit / ** / Limosa fedoa / MAGO
Arenariinae--Turnstones and Calidridine Sandpipers
Ruddy Turnstone / ** / Arenaria interpres / RUTU
Red Knot / ** / Calidris canutus / REKN
Ruff / ** / Calidris pugnax / RUFF
Sharp-tailed Sandpiper / ** / Calidris acuminata / SHAS
Stilt Sandpiper / Calisdris himantopus / STSA
Curlew Sandpiper / ** / Calidris ferruginea / CUSA
Sanderling / ** / Calidris alba / SAND
Dunlin / ** / Calidris alpina / DUNL
Purple Sandpiper / ** / Calidris maritima / PUSA
Baird's Sandpiper / Calidris bairdii / BASA
Least Sandpiper / ** / Calidris minutilla / LESA
White-rumped Sandpiper / ** / Calidris fuscicollis / WRSA
Buff-breasted Sandpiper / ** / Calidris subruficollis / BBSA
Pectoral Sandpiper / ** / Calidris melanotos / PESA
Semipalmated Sandpiper / Calidris pusilla / SESA
Western Sandpiper / Calidris mauri / WESA
Scolopacinae--Dowitchers, Snipe, Woodcock
Short-billed Dowitcher / ** / Limnodromus griseus / SBDO
Long-billed Dowitcher / Limnodromus scolopaceus / LBDO
American Woodcock / ** / Scolopax minor / AMWO
Wilson's Snipe / Gallinago delicata / WISN
Tringinae--Sandpipers, Yellowlegs, Phalaropes
Spotted Sandpiper / Actitis macularius / SPSA
Solitary Sandpiper / Tringa solitaria / SOSA
Lesser Yellowlegs / Tringa flavipes / LEYE
Greater Yellowlegs / Tringa melanoleuca / GRYE
Willet / ** / Tringa semipalmata / WILL
Wilson's Phalarope / Phalaropus tricolor / WIPH
Red-necked Phalarope / ** / Phalaropus lobatus / RNPH
Red Phalarope / ** / Phalaropus fulicarius / REPH
Stercorariidae--Skuas
Pomarine Jaeger / ** / Stercorarius pomarinus / POJA
Parasitic Jaeger / ** / Stercorarius parasiticus / PAJA
Long-tailed Jaeger / ** / Stercorarius longicaudus / LTJA
Alcidae--Murres
Long-billed Murrelet / ** / Brachyramphus perdix / LBMU
Ancient Murrelet / ** / Synthliboramphus antiquus / ANMU
Laridae--Gulls, Terns, and Skimmers
Black-legged Kittiwake / ** / Rissa tridactyla / BLKI
Ivory Gull / ** / Pagophila eburnea / IVGU
Sabine's Gull / ** / Xema sabini / SAGU
Bonaparte's Gull / ** / Chroicocephalus philadelphia / BOGU
Black-headed Gull / ** / Chroicocephalus ridibundus / BHGU
Little Gull / ** / Hydrocoloeus minutus / LIGU
Ross's Gull / ** / Rhodostethia rosea / ROGU
Laughing Gull / ** / Leucophaeus atricilla / LAGU
Franklin's Gull / Leucophaeus pipixcan / FRGU
Mew Gull / ** / Larus canus / MEGU
Ring-billed Gull / Larus delawarensis / RBGU
Western Gull / Larus occidentalis / WEGU
California Gull / Larus californicus / CAGU
Herring Gull / Larus argentatus / HERG
Iceland Gull / ** / Larus glaucoides / ICGU
Lesser Black-backed Gull / ** / Larus fuscus / LBBG
Slaty-backed Gull / ** / Larus schistisagus / SBGU
Glaucous-winged Gull / ** / Larus glaucescens / GWGU
Glaucous Gull / ** / Larus hyperboreus / GLGU
Great Black-backed Gull / ** / Larus marinus / GBBG
Kelp Gull / ** / Larus dominicanus / KEGU
Sooty Tern / ** / Onychoprion fuscatus / SOTE
Least Tern / ** / Sterna antillarum / LETE
Caspian Tern / ** / Hydroprogne caspia / CATE
Black Tern / ** / Chilidonias niger / BLTE
Common Tern / ** / Sterna hirundo / COTE
Arctic Tern / ** / Sterna paradisaea / ARTE
Forster's Tern / Sterna forsteri / FOTE
Royal Tern / ** / Thalasseus maximus / ROYT
Sandwich Tern / ** / Sterna sandvicensis / SATE
Black Skimmer / ** / Rynchops niger / BLSK
Gaviiformes----Loons
Gaviidae-Loons
Red-throated Loon / ** / Gavia stellata / RTLO
Arctic Loon / ** / Gavia arctica / ARLO
Pacific Loon / ** / Gavia pacifica / PALO
Common Loon / Gavia immer / COLO
Yellow-billed Loon / ** / Gavia adamsii / YBLO
Ciconiiformes--Storks
Wood Stork / Mycteria americana / WOST
Suliformes----Frigatebirds, Boobys and Cormorants
Fregatidae-Frigatebirds
Magnificent Frigatebird / ** / Fregata magnificens / MAFR
Sulidae-Boobys
Brown Booby / ** / Sula leucogaster / BRBO
Phalacrocoracidae--Cormorants
Neotropic Cormorant / ** / Phalacrocorax brasilianus / NECO
Double-crested Cormorant / Phalacrocorax auritus / DCCO
Anhingidae--Darters
Anhinga / ** / Anhinga anhinga / ANHI
Pelecaniformes----Pelicans, Herons, Ibises and Allies
Pelecanidae--Pelicans
American White Pelican / Pelecanus erythrorhynchos / AWPE
Brown Pelican / ** / Pelecanus occidentalis / BRPE
Ardeidae--Herons, Bitterns, and Allies
American Bittern / Botaurus lentiginosus / AMBI
Least Bittern / ** / Ixobrychus exilis / LEBI
Great Blue Heron / Ardea herodias / GTBH
Great Egret / Ardea alba / GREG
Snowy Egret / Egretta thula / SNEG
Little Blue Heron / ** / Egretta caerulea / LBHE
Tricolored Heron / ** / Egretta tricolor / TRHE
Reddish Egret / ** / Egretta rufescens / REEG
Cattle Egret / ** / Bubulcus ibis / CAEG
Green Heron / ** / Butorides virescens / GRHE
Black-crowned Night-Heron / Nycticorax nycticorax / BCNH
Yellow-crowned Night-Heron / ** / Nyctanassa violacea / YCNH
Threskiornithidae--Ibis and Spoonbills
White Ibis / ** / Eudocimus albus / WHIB
Glossy Ibis / ** / Plegadis falcinellus / GLIB
White-faced Ibis / Plegadis chihi / WFIB
Roseate Spoonbill / ** / Platalea ajaja / ROSP
Cathartiformes--New World Vultures
Cathartidae--Vultures
Black Vulture / ** / Coragyps atratus / BLVU
Turkey Vulture / Cathartes aura / TUVU
Accipitriformes----Hawks, Kites, Eagles, and Allies
Pandionidae--Ospreys
Osprey / Pandion haliaetus / OSPR
Accipitridae--Hawks, Kites, Eagles, and Allies
Swallow-tailed Kite / ** / Elanoides forficatus / STKI
Mississippi Kite / ** / Ictinia misisippiensis / MIKI
Bald Eagle / Haliaeetus leucocephalus / BAEA
Northern Harrier / Circus hudsonius / NOHA
Sharp-shinned Hawk / Accipiter striatus / SSHA
Cooper's Hawk / Accipiter cooperii / COHA
Northern Goshawk / Accipiter gentilis / NOGO
Common Black Hawk / ** / Buteogallus anthracinus / CBHA
Harris's Hawk / ** / Parabuteo unicinctus / HRHA
Red-shouldered Hawk / ** / Buteo lineatus / RSHA
Broad-winged Hawk / ** / Buteo platypterus / BWHA
Swainson's Hawk / Buteo swainsoni / SWHA
Zone-tailed Hawk / ** / Buteo albonotatus / ZTHA
Red-tailed Hawk / Buteo jamaicensis / RTHA
Ferruginous Hawk / ** / Buteo regalis / FEHA
Rough-legged Hawk / Buteo lagopus / RLHA
Golden Eagle / ** / Aquila chrysaetos / GOEA
Stringiformes----Owls
Tytonidae--Barn Owls
Barn Owl / ** / Tyto alba / BNOW
Strigidae--Typical Owls
Flammulated Owl / ** / Psiloscops flammeolus / FLOW
Western Screech-Owl / ** / Megascops kennicottii / WESO
Eastern Screech-Owl / ** / Megascops asio / EASO
Great Horned Owl / Bubo virginianus / GHOW
Snowy Owl / ** / Bubo scandiacus / SNOW
Northern Pygmy-Owl / ** / Glaucidium gnoma / NPOW
Burrowing Owl / ** / Athene cunicularia / BUOW
Spotted Owl / ** / Strix occidentalis / SPOW
Barred Owl / ** / Strix varia / BDOW
Long-eared Owl / ** / Asio otus / LEOW
Short-eared Owl / ** / Asio flammeus / SEOW
Boreal Owl / ** / Aegolius funereus / BOOW
Northern Saw-whet Owl / ** / Aegolius acadicus / NSWO
Coraciiformes--Kingfishers
Alcedinidae--Kingfishers
Belted Kingfisher / Megaceryle alcyon / BEKI
Piciformes----Woodpeckers and Allies
Picidae--Woodpeckers and Allies
Lewis's Woodpecker / ** / Melanerpes lewis / LEWO
Red-headed Woodpecker / ** / Melanerpes erythrocephalus / RHWO
Acorn Woodpecker / ** / Melanerpes formicivorus / ACWO
Red-bellied Woodpecker / ** / Melanerpes carolinus / RBWO
Williamson's Sapsucker / ** / Sphyrapicus thyroideus / WISA
Yellow-bellied Sapsucker / ** / Sphyrapicus varius / YBSA
Red-naped Sapsucker / Sphyrapicus nuchalis / RNSA
Ladder-backed Woodpecker / ** / Picoides scalaris / LBWO
Downy Woodpecker / Picoides pubescens / DOWO
Hairy Woodpecker / Picoides villosus / HAWO
American Three-toed Woodpecker / ** / Picoides dorsalis / ATTW
Black-backed Woodpecker / ** / Picoides arcticus / BBWO
Northern Flicker / Colaptes auratus / NOFL
Pileated Woodpecker / ** / Dyrocopus pileatus / PIWO
Falconiformes----Caracaras and Falcons