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Bird Observations

Date Range:
Jan-Dec, 1900-2021

Colorado

Updated ~19 hr(s) ago.

508 species (+305 other taxa) Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Black-bellied Whistling-Duck
Snow Goose
Ross's Goose
Snow x Ross's Goose (hybrid)
Snow/Ross's Goose
Graylag Goose (Domestic type)
Swan Goose (Domestic type)
Graylag x Swan Goose (Domestic type) (hybrid)
Greater White-fronted Goose
Snow x Greater White-fronted Goose (hybrid)
Pink-footed Goose
Domestic goose sp. (Domestic type)
Brant
Barnacle Goose
Cackling Goose
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Snow x Cackling Goose (hybrid)
Ross's x Cackling Goose (hybrid)
Greater White-fronted x Cackling Goose (hybrid)
Canada Goose
Swan Goose (Domestic type) x Canada Goose (hybrid)
Greater White-fronted x Canada Goose (hybrid)
Graylag x Canada Goose (hybrid)
Graylag Goose (Domestic type) x Canada Goose (hybrid)
Domestic goose sp. (Domestic type) x Canada Goose (hybrid)
Snow x Canada Goose (hybrid)
Ross's x Canada Goose (hybrid)
Cackling/Canada Goose
Snow/Ross's x Cackling/Canada Goose (hybrid)
goose sp.
Mute Swan
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Trumpeter Swan
Tundra Swan
Trumpeter/Tundra Swan
swan sp.
Muscovy Duck (Domestic type)
Wood Duck
Garganey
Blue-winged Teal
Cinnamon Teal
Blue-winged x Cinnamon Teal (hybrid)
Blue-winged/Cinnamon Teal
Northern Shoveler
Blue-winged Teal x Northern Shoveler (hybrid)
Cinnamon Teal x Northern Shoveler (hybrid)
Gadwall
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Northern Shoveler x Gadwall (hybrid)
Eurasian Wigeon
American Wigeon
Northern Shoveler x American Wigeon (hybrid)
Gadwall x American Wigeon (hybrid)
Eurasian x American Wigeon (hybrid)
Eurasian/American Wigeon
Mallard
Mallard (Domestic type)
Muscovy Duck x Mallard (hybrid)
Northern Shoveler x Mallard (hybrid)
Gadwall x Mallard (hybrid)
American Wigeon x Mallard (hybrid)
Mexican Duck
Mallard x Mexican Duck (hybrid)
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Mallard/Mexican Duck
American Black Duck
Mallard x American Black Duck (hybrid)
Mallard/American Black Duck
Mottled Duck
Mallard x Mottled Duck (hybrid)
Mallard/Mottled Duck
Mallard x Mexican/Mottled Duck (hybrid)
Mexican/Mottled Duck
Northern Pintail
Gadwall x Northern Pintail (hybrid)
American Wigeon x Northern Pintail (hybrid)
Mallard x Northern Pintail (hybrid)
Green-winged Teal
Blue-winged x Green-winged Teal (hybrid)
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Cinnamon x Green-winged Teal (hybrid)
Gadwall x Green-winged Teal (hybrid)
American Wigeon x Green-winged Teal (hybrid)
Anas sp.
teal sp.
dabbling duck sp.
Canvasback
Redhead
Canvasback x Redhead (hybrid)
Ring-necked Duck
Redhead x Ring-necked Duck (hybrid)
Tufted Duck
Ring-necked x Tufted Duck (hybrid)
Greater Scaup
Redhead x Greater Scaup (hybrid)
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Ring-necked Duck x Greater Scaup (hybrid)
Lesser Scaup
Redhead x Lesser Scaup (hybrid)
Ring-necked Duck x Lesser Scaup (hybrid)
Tufted Duck x Lesser Scaup (hybrid)
Greater/Lesser Scaup
Redhead x scaup sp. (hybrid)
Ring-necked Duck x scaup sp. (hybrid)
Aythya sp.
Harlequin Duck
Surf Scoter
White-winged Scoter
Black Scoter
Surf/Black Scoter
scoter sp.
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Long-tailed Duck
Bufflehead
Common Goldeneye
Bufflehead x Common Goldeneye (hybrid)
Barrow's Goldeneye
Common x Barrow's Goldeneye (hybrid)
Common/Barrow's Goldeneye
Hooded Merganser
Bufflehead x Hooded Merganser (hybrid)
Common Goldeneye x Hooded Merganser (hybrid)
goldeneye sp. x Hooded Merganser (hybrid)
Common Merganser
Red-breasted Merganser
Common/Red-breasted Merganser
merganser sp.
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Ruddy Duck
duck sp.
waterfowl sp.
Northern Bobwhite
Scaled Quail
Northern Bobwhite x Scaled Quail (hybrid)
California Quail
Gambel's Quail
Chukar
Red Junglefowl (Domestic type)
Ring-necked Pheasant
pheasant sp.
Ruffed Grouse
Greater Sage-Grouse
Gunnison Sage-Grouse
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
White-tailed Ptarmigan
Dusky Grouse
Sharp-tailed Grouse
Greater Prairie-Chicken
Lesser Prairie-Chicken
Greater/Lesser Prairie-Chicken
grouse sp.
Wild Turkey
Wild Turkey (Domestic type)
Pied-billed Grebe
Horned Grebe
Red-necked Grebe
Eared Grebe
Horned/Eared Grebe
Podiceps sp.
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Western Grebe
Clark's Grebe
Western x Clark's Grebe (hybrid)
Western/Clark's Grebe
grebe sp.
Rock Pigeon
Band-tailed Pigeon
Rock/Band-tailed Pigeon
Patagioenas sp.
Eurasian Collared-Dove
African Collared-Dove
African Collared-Dove (Domestic type or Ringed Turtle-Dove)
Eurasian/African Collared-Dove
Streptopelia sp.
Inca Dove
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Common Ground Dove
Ruddy Ground Dove
White-winged Dove
Mourning Dove
Eurasian Collared-Dove x Mourning Dove (hybrid)
pigeon/dove sp.
Groove-billed Ani
Greater Roadrunner
Yellow-billed Cuckoo
Black-billed Cuckoo
Yellow-billed/Black-billed Cuckoo
Lesser Nighthawk
Common Nighthawk
nighthawk sp.
Common Poorwill
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Eastern Whip-poor-will
Mexican Whip-poor-will
Eastern/Mexican Whip-poor-will
nightjar sp.
Black Swift
Chimney Swift
Vaux's Swift
Chimney/Vaux's Swift
Chaetura sp.
White-throated Swift
large swift sp.
swift sp.
Mexican Violetear
Rivoli's Hummingbird
Blue-throated Mountain-gem
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Ruby-throated Hummingbird
Black-chinned Hummingbird
Ruby-throated x Black-chinned Hummingbird (hybrid)
Ruby-throated/Black-chinned Hummingbird
Anna's Hummingbird
Costa's Hummingbird
Broad-tailed Hummingbird
Rufous Hummingbird
Rufous/Allen's Hummingbird
Calliope Hummingbird
Selasphorus sp.
Broad-billed Hummingbird
White-eared Hummingbird
hummingbird sp.
King Rail
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Virginia Rail
Sora
Common Gallinule
American Coot
Purple Gallinule
Black Rail
rail/crake sp.
Sandhill Crane
Whooping Crane
crane sp.
Black-necked Stilt
American Avocet
Black-bellied Plover
American Golden-Plover
American/Pacific Golden-Plover (Lesser Golden-Plover)
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
golden-plover sp.
Black-bellied Plover/golden-plover sp.
Snowy Plover
Semipalmated Plover
Piping Plover
Killdeer
Mountain Plover
small plover sp.
plover sp.
Upland Sandpiper
Whimbrel
Long-billed Curlew
Hudsonian Godwit
Marbled Godwit
godwit sp.
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Ruddy Turnstone
Red Knot
Ruff
Sharp-tailed Sandpiper
Stilt Sandpiper
Curlew Sandpiper
Sanderling
Dunlin
Purple Sandpiper
Baird's Sandpiper
Least Sandpiper
White-rumped Sandpiper
Buff-breasted Sandpiper
Pectoral Sandpiper
Semipalmated Sandpiper
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Western Sandpiper
Semipalmated/Western Sandpiper
peep sp.
Calidris sp.
Short-billed Dowitcher
Long-billed Dowitcher
Short-billed/Long-billed Dowitcher
American Woodcock
Wilson's Snipe
Wilson's Phalarope
Red-necked Phalarope
Red Phalarope
Red-necked/Red Phalarope
phalarope sp.
Spotted Sandpiper
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Solitary Sandpiper
Greater Yellowlegs
Willet
Lesser Yellowlegs
Greater/Lesser Yellowlegs
Tringa sp.
Scolopacidae sp.
large shorebird sp.
shorebird sp.
Pomarine Jaeger
Parasitic Jaeger