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Bird Observations

			Date Range: Dec, 1900-2021

Colorado

Updated ~33 hr(s) ago.

319 species (+133 other taxa)	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Snow Goose
Ross's Goose
Snow x Ross's Goose (hybrid)
Snow/Ross's Goose
Graylag Goose
Swan Goose
Graylag x Swan Goose (hybrid)
Greater White-fronted Goose
Snow x Greater White-fronted Goose (hybrid)
Pink-footed Goose
Domestic goose sp. (Domestic type)
Brant
Cackling Goose
Snow x Cackling Goose (hybrid)
Ross's x Cackling Goose (hybrid)
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Greater White-fronted x Cackling Goose (hybrid)
Barnacle x Cackling Goose (hybrid)
Canada Goose
Swan Goose x Canada Goose (hybrid)
Greater White-fronted x Canada Goose (hybrid)
Graylag x Canada Goose (hybrid)
Domestic goose sp. 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.
Mute Swan
Trumpeter Swan
Tundra Swan
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Trumpeter/Tundra Swan
swan sp.
goose sp.
Muscovy Duck
Wood Duck
Mandarin Duck
Baikal Teal
Blue-winged Teal
Blue-winged/Cinnamon Teal
Northern Shoveler
Gadwall
Northern Shoveler x Gadwall (hybrid)
Eurasian Wigeon
American Wigeon
Gadwall x American Wigeon (hybrid)
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Eurasian/American Wigeon
Mallard
Muscovy Duck x Mallard (hybrid)
Gadwall x Mallard (hybrid)
American Wigeon x Mallard (hybrid)
Mexican Duck
Mallard x Mexican Duck (hybrid)
Mallard/Mexican Duck
American Black Duck
Mallard x American Black Duck (hybrid)
Northern Pintail
Mallard x Northern Pintail (hybrid)
Green-winged Teal
teal sp.
dabbling duck sp.
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Canvasback
Redhead
Ring-necked Duck
Redhead x Ring-necked Duck (hybrid)
Tufted Duck
Greater Scaup
Lesser Scaup
Tufted Duck x Lesser Scaup (hybrid)
Greater/Lesser Scaup
Aythya sp.
Surf Scoter
White-winged Scoter
Black Scoter
scoter sp.
Long-tailed Duck
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Bufflehead
Common Goldeneye
Bufflehead x Common Goldeneye (hybrid)
Barrow's Goldeneye
Common x Barrow's Goldeneye (hybrid)
Common/Barrow's Goldeneye
Hooded Merganser
Common Goldeneye x Hooded Merganser (hybrid)
goldeneye sp. x Hooded Merganser (hybrid)
Common Merganser
Red-breasted Merganser
Common/Red-breasted Merganser
merganser sp.
Ruddy Duck
duck sp.
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Northern Bobwhite
Scaled Quail
California Quail
Gambel's Quail
Wild Turkey
Greater Sage-Grouse
Gunnison Sage-Grouse
Dusky Grouse
Sharp-tailed Grouse
Greater Prairie-Chicken
White-tailed Ptarmigan
Ring-necked Pheasant
Indian Peafowl
Chukar
Pied-billed Grebe
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Horned Grebe
Red-necked Grebe
Eared Grebe
Horned/Eared Grebe
Western Grebe
Clark's Grebe
Western x Clark's Grebe (hybrid)
Western/Clark's Grebe
grebe sp.
Rock Pigeon
Band-tailed Pigeon
Eurasian Collared-Dove
African Collared-Dove
Streptopelia sp.
Inca Dove
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Common Ground Dove
White-winged Dove
Mourning Dove
Eurasian Collared-Dove x Mourning Dove (hybrid)
pigeon/dove sp.
Greater Roadrunner
White-throated Swift
Anna's Hummingbird
Costa's Hummingbird
Broad-billed Hummingbird
Virginia Rail
Sora
Common Gallinule
American Coot
rail/crake sp.
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Sandhill Crane
American Avocet
Black-bellied Plover
Killdeer
American Woodcock
Wilson's Snipe
Wilson's Phalarope
Spotted Sandpiper
Greater Yellowlegs
Lesser/Greater Yellowlegs
Dunlin
Purple Sandpiper
Baird's Sandpiper
Least Sandpiper
Pectoral Sandpiper
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
shorebird sp.
Pomarine Jaeger
jaeger sp.
Ancient Murrelet
Little Gull
Black-legged Kittiwake
Bonaparte's Gull
Laughing Gull
Franklin's Gull
Short-billed Gull
Ring-billed Gull
Herring Gull
Great Black-backed Gull
Glaucous Gull
Herring x Glaucous Gull (hybrid)
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Lesser Black-backed Gull
Herring x Lesser Black-backed Gull (hybrid)
California Gull
Herring x California Gull (hybrid)
Glaucous-winged Gull
Herring x Glaucous-winged Gull (hybrid)
Herring/Glaucous-winged Gull
Slaty-backed Gull
Iceland Gull
Herring/Iceland Gull
white-winged gull sp.
Larus sp.
gull sp.
Red-throated Loon
Arctic Loon
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Pacific Loon
Common Loon
Yellow-billed Loon
loon sp.
Double-crested Cormorant
Double-crested/Neotropic Cormorant
cormorant sp.
American White Pelican
American Bittern
Black-crowned Night Heron
Green Heron
Western Cattle Egret
Great Egret
Great Blue Heron
Turkey Vulture
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Osprey
Golden Eagle
Northern Harrier
Sharp-shinned Hawk
Cooper's Hawk
Sharp-shinned/Cooper's Hawk
American Goshawk
Cooper's Hawk/American Goshawk
Accipiter sp.
Bald Eagle
Golden/Bald Eagle
Harris's Hawk
Red-shouldered Hawk
Red-tailed Hawk
Rough-legged Hawk
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Ferruginous Hawk
Buteo sp.
Buteo/eagle sp.
hawk sp.
eagle sp.
Barn Owl
Western Screech-Owl
Eastern Screech-Owl
screech-owl sp.
Snowy Owl
Great Horned Owl
Northern Pygmy-Owl
Burrowing Owl
Spotted Owl
Long-eared Owl
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Short-eared Owl
Boreal Owl
Northern Saw-whet Owl
owl sp.
Belted Kingfisher
Williamson's Sapsucker
Yellow-bellied Sapsucker
Red-naped Sapsucker
Yellow-bellied/Red-naped Sapsucker
Red-breasted Sapsucker
Red-naped x Red-breasted Sapsucker (hybrid)
sapsucker sp.
Lewis's Woodpecker
Red-headed Woodpecker
Acorn Woodpecker
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Red-bellied Woodpecker
American Three-toed Woodpecker
Downy Woodpecker
Ladder-backed Woodpecker
Downy/Ladder-backed Woodpecker
Hairy Woodpecker
Downy x Hairy Woodpecker (hybrid)
Downy/Hairy Woodpecker
Northern Flicker
woodpecker sp.
American Kestrel
Merlin
Gyrfalcon
Peregrine Falcon
Prairie Falcon
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
large falcon sp.
small falcon sp.
falcon sp.
diurnal raptor sp.
Monk Parakeet
Least Flycatcher
Hammond's Flycatcher
Empidonax sp.
Black Phoebe
Eastern Phoebe
Say's Phoebe
phoebe sp.
Vermilion Flycatcher
Thick-billed Kingbird
Loggerhead Shrike
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Northern Shrike
Loggerhead/Northern Shrike
shrike sp.
Canada Jay
Pinyon Jay
Steller's Jay
Blue Jay
Steller's x Blue Jay (hybrid)
Woodhouse's Scrub-Jay
Steller's Jay x Woodhouse's Scrub-Jay (hybrid)
jay sp.
Black-billed Magpie
Clark's Nutcracker
American Crow
Chihuahuan Raven
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Common Raven
raven sp.
crow/raven sp.
Black-capped Chickadee
Mountain Chickadee
Black-capped x Mountain Chickadee (hybrid)
Black-capped/Mountain Chickadee
chickadee sp.
Juniper Titmouse
Horned Lark
Tree Swallow
Bushtit
Ruby-crowned Kinglet
Golden-crowned Kinglet
Ruby-crowned/Golden-crowned Kinglet
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
White-breasted Nuthatch
Pygmy Nuthatch
Red-breasted Nuthatch
nuthatch sp.
Brown Creeper
Blue-gray Gnatcatcher
Rock Wren
Canyon Wren
House Wren
Pacific Wren
Winter Wren
Pacific/Winter Wren
Sedge Wren
Marsh Wren
Carolina Wren
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Bewick's Wren
wren sp.
American Dipper
European Starling
Gray Catbird
Curve-billed Thrasher
Brown Thrasher
Sage Thrasher
Northern Mockingbird
Eastern Bluebird
Western Bluebird
Mountain Bluebird
bluebird sp.
Townsend's Solitaire
Varied Thrush
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Hermit Thrush
Wood Thrush
American Robin
thrush sp.
Bohemian Waxwing
Cedar Waxwing
Bohemian/Cedar Waxwing
Phainopepla
House Sparrow
American Pipit
Brambling
Evening Grosbeak
Pine Grosbeak
Gray-crowned Rosy-Finch
Black Rosy-Finch
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Brown-capped Rosy-Finch
rosy-finch sp.
House Finch
Purple Finch
Cassin's Finch
Haemorhous sp.
Common Redpoll
Hoary Redpoll
Common/Hoary Redpoll
Red Crossbill
White-winged Crossbill
European Goldfinch
Pine Siskin
Lesser Goldfinch
American Goldfinch
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
new world goldfinch sp.
finch sp.
Lapland Longspur
Chestnut-collared Longspur
Thick-billed Longspur
longspur sp.
Snow Bunting
Grasshopper Sparrow
Chipping Sparrow
Clay-colored Sparrow
Field Sparrow
Brewer's Sparrow
Black-throated Sparrow
Lark Sparrow
Lark Bunting
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
American Tree Sparrow
Spizella sp./American Tree Sparrow
Fox Sparrow
Dark-eyed Junco
White-crowned Sparrow
Golden-crowned Sparrow
Harris's Sparrow
White-throated Sparrow
Zonotrichia sp.
Sagebrush Sparrow
Vesper Sparrow
LeConte's Sparrow
Nelson's Sparrow
Savannah Sparrow
Song Sparrow
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Lincoln's Sparrow
Swamp Sparrow
Lincoln's/Swamp Sparrow
Canyon Towhee
Rufous-crowned Sparrow
Green-tailed Towhee
Spotted Towhee
Canyon x Spotted Towhee (hybrid)
Eastern Towhee
Spotted x Eastern Towhee (hybrid)
Spotted/Eastern Towhee (Rufous-sided Towhee)
towhee sp.
new world sparrow sp.
Yellow-breasted Chat
Yellow-headed Blackbird
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Western Meadowlark
Eastern/Chihuahuan Meadowlark
Sturnella meadowlark sp.
Streak-backed Oriole
Bullock's Oriole
Red-winged Blackbird
Brown-headed Cowbird
Rusty Blackbird
Brewer's Blackbird
Rusty/Brewer's Blackbird
Common Grackle
Great-tailed Grackle
grackle sp.
blackbird sp.
Ovenbird
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Worm-eating Warbler
Northern Waterthrush
Black-and-white Warbler
Prothonotary Warbler
Orange-crowned Warbler
Nashville Warbler
MacGillivray's Warbler
Common Yellowthroat
Cape May Warbler
Northern Parula
Magnolia Warbler
Yellow Warbler
Chestnut-sided Warbler
Black-throated Blue Warbler
Palm Warbler
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Pine Warbler
Yellow-rumped Warbler
Yellow-throated Warbler
Prairie Warbler
Townsend's Warbler
Black-throated Green Warbler
Setophaga sp.
Wilson's Warbler
new world warbler sp.
Summer Tanager
Scarlet Tanager
Western Tanager
Northern Cardinal
Pyrrhuloxia
Lazuli Bunting
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
passerine sp.
bird sp.

KEY:| = insufficient data | = rare to widespread

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