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Bird Observations

Date Range:
Jan-Dec, 1900-2021

Colorado

Updated ~17 hr(s) ago.

515 species (+315 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)
Branta sp.
goose sp.
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Mute Swan
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)
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Gadwall
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
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Mallard x Mexican Duck (hybrid)
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
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Blue-winged x Green-winged Teal (hybrid)
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
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Redhead x Greater Scaup (hybrid)
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
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
scoter sp.
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
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
merganser sp.
Ruddy Duck
duck sp.
waterfowl sp.
Helmeted Guineafowl (Domestic type)
Northern Bobwhite
Scaled Quail
Northern Bobwhite x Scaled Quail (hybrid)
California Quail
Gambel's Quail
Wild Turkey
Wild Turkey (Domestic type)
Ruffed Grouse
Greater Sage-Grouse
Gunnison Sage-Grouse
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Dusky Grouse
Sharp-tailed Grouse
Greater Prairie-Chicken
Lesser Prairie-Chicken
Greater/Lesser Prairie-Chicken
White-tailed Ptarmigan
grouse sp.
Ring-necked Pheasant
pheasant sp.
Red Junglefowl (Domestic type)
Chukar
Pied-billed Grebe
Horned Grebe
Red-necked Grebe
Eared Grebe
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Horned/Eared Grebe
Podiceps sp.
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
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Streptopelia sp.
Inca Dove
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
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
nighthawk sp.
Common Poorwill
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
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Rivoli's Hummingbird
Blue-throated Mountain-gem
Ruby-throated Hummingbird
Black-chinned Hummingbird
Ruby-throated x Black-chinned Hummingbird (hybrid)
Ruby-throated/Black-chinned Hummingbird
Anna's Hummingbird
Costa's Hummingbird
Calliope Hummingbird
Rufous Hummingbird
Rufous/Allen's Hummingbird
Broad-tailed Hummingbird
Rufous x Broad-tailed Hummingbird (hybrid)
Selasphorus sp.
Broad-billed Hummingbird
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
White-eared Hummingbird
hummingbird sp.
King Rail
Virginia Rail
Rallus sp.
Sora
Common Gallinule
American Coot
Purple Gallinule
Black Rail
rail/crake sp.
Sandhill Crane
Whooping Crane
crane sp.
Black-necked Stilt
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
American Avocet
Black-bellied Plover
American Golden-Plover
American/Pacific Golden-Plover (Lesser Golden-Plover)
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
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Long-billed Curlew
Hudsonian Godwit
Marbled Godwit
godwit sp.
Ruddy Turnstone
Red Knot
Ruff
Sharp-tailed Sandpiper
Stilt Sandpiper
Curlew Sandpiper
Sanderling
Dunlin
Purple Sandpiper
Baird's Sandpiper
Least Sandpiper
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
White-rumped Sandpiper
Buff-breasted Sandpiper
Pectoral Sandpiper
Semipalmated Sandpiper
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
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Red Phalarope
Red-necked/Red Phalarope
phalarope sp.
Spotted Sandpiper
Solitary Sandpiper
Greater Yellowlegs
Willet
Lesser Yellowlegs
Greater/Lesser Yellowlegs
Tringa sp.
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