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Bird Observations

			Date Range: Jul, 1900-2021

Colorado

Updated ~34 hr(s) ago.

414 species (+163 other taxa)	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Snow Goose
Graylag Goose
Swan Goose
Graylag x Swan Goose (hybrid)
Greater White-fronted Goose
Domestic goose sp. (Domestic type)
Cackling Goose
Canada Goose
Graylag x Canada Goose (hybrid)
Domestic goose sp. x Canada Goose (hybrid)
Cackling/Canada Goose
Mute Swan
Trumpeter Swan
swan sp.
goose sp.
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Common Shelduck
Muscovy Duck
Wood Duck
Blue-winged Teal
Cinnamon Teal
Blue-winged x Cinnamon Teal (hybrid)
Blue-winged/Cinnamon Teal
Northern Shoveler
Blue-winged Teal x Northern Shoveler (hybrid)
Gadwall
American Wigeon
Eurasian/American Wigeon
Mallard
Mexican Duck
Mallard x Mexican Duck (hybrid)
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Mallard/Mexican Duck
Mottled Duck
Mexican/Mottled Duck
Northern Pintail
Green-winged Teal
Anas sp.
teal sp.
dabbling duck sp.
Canvasback
Redhead
Ring-necked Duck
Greater Scaup
Lesser Scaup
Ring-necked Duck x Lesser Scaup (hybrid)
Greater/Lesser Scaup
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Aythya sp.
Surf Scoter
scoter sp.
Bufflehead
Common Goldeneye
Barrow's Goldeneye
Common/Barrow's Goldeneye
Hooded Merganser
Common Merganser
Red-breasted Merganser
Common/Red-breasted Merganser
Ruddy Duck
duck sp.
Helmeted Guineafowl
Northern Bobwhite
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Scaled Quail
California Quail
Gambel's Quail
Wild Turkey
Ruffed Grouse
Greater Sage-Grouse
Gunnison Sage-Grouse
Dusky Grouse
Sharp-tailed Grouse
Greater Prairie-Chicken
Lesser Prairie-Chicken
White-tailed Ptarmigan
grouse sp.
Ring-necked Pheasant
Indian Peafowl
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Red Junglefowl
Chukar
Pied-billed Grebe
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
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
African Collared-Dove
Streptopelia sp.
Inca Dove
White-winged Dove
Mourning Dove
pigeon/dove sp.
Groove-billed Ani
Greater Roadrunner
Yellow-billed Cuckoo
Black-billed Cuckoo
Yellow-billed/Black-billed Cuckoo
cuckoo sp. (Cuculidae sp.)
Lesser Nighthawk
Common Nighthawk
nighthawk sp.
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Common Poorwill
Mexican Whip-poor-will
nightjar sp.
Black Swift
Chimney Swift
Chimney/Vaux's Swift
White-throated Swift
large swift sp.
swift sp.
Mexican Violetear
Rivoli's Hummingbird
Blue-throated Mountain-gem
Ruby-throated Hummingbird
Black-chinned Hummingbird
Ruby-throated/Black-chinned Hummingbird
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Anna's Hummingbird
Costa's Hummingbird
Calliope Hummingbird
Rufous Hummingbird
Rufous/Allen's Hummingbird
Broad-tailed Hummingbird
Selasphorus sp.
White-eared Hummingbird
hummingbird sp.
King Rail
Virginia Rail
Sora
Common Gallinule
American Coot
Black Rail
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
rail/crake sp.
Sandhill Crane
Black-necked Stilt
American Avocet
Black-bellied Plover
American Golden-Plover
Killdeer
Semipalmated Plover
Piping Plover
Mountain Plover
Snowy Plover
small plover sp.
plover sp.
Upland Sandpiper
Whimbrel
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Long-billed Curlew
Marbled Godwit
Short-billed Dowitcher
Long-billed Dowitcher
Short-billed/Long-billed Dowitcher
Wilson's Snipe
Wilson's Phalarope
Red Phalarope
Red-necked Phalarope
phalarope sp.
Spotted Sandpiper
Solitary Sandpiper
Lesser Yellowlegs
Willet
Greater Yellowlegs
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Lesser/Greater Yellowlegs
Tringa sp.
Ruddy Turnstone
Red Knot
Curlew Sandpiper
Stilt Sandpiper
Buff-breasted Sandpiper
Sanderling
Dunlin
Baird's Sandpiper
White-rumped Sandpiper
Least Sandpiper
Pectoral Sandpiper
Western Sandpiper
Semipalmated Sandpiper
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Western/Semipalmated Sandpiper
peep sp.
Calidris sp.
Scolopacidae sp.
large shorebird sp.
shorebird sp.
Long-tailed Jaeger
Pomarine Jaeger
Little Gull
Bonaparte's Gull
Laughing Gull
Franklin's Gull
Ring-billed Gull
Western Gull
Herring Gull
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Great Black-backed Gull
Lesser Black-backed Gull
California Gull
Glaucous-winged Gull
Iceland Gull
Larus sp.
gull sp.
Black Skimmer
Least Tern
Caspian Tern
Black Tern
Forster's Tern
Common Tern
Forster's/Common Tern
Sterna sp.
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Royal Tern
large tern sp.
tern sp.
Red-throated Loon
Pacific Loon
Common Loon
loon sp.
Double-crested Cormorant
Neotropic Cormorant
Double-crested/Neotropic Cormorant
cormorant sp.
American White Pelican
Brown Pelican
American Bittern
Least Bittern
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Yellow-crowned Night Heron
Black-crowned Night Heron
Yellow-crowned/Black-crowned Night Heron
Little Blue Heron
Tricolored Heron
Reddish Egret
Snowy Egret
Green Heron
Western Cattle Egret
Great Egret
Great Blue Heron
heron sp.
white egret sp.
White Ibis
Glossy Ibis
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
White-faced Ibis
Glossy x White-faced Ibis (hybrid)
Glossy/White-faced Ibis
Black Vulture
Turkey Vulture
Osprey
Swallow-tailed Kite
Golden Eagle
Mississippi Kite
Northern Harrier
Sharp-shinned Hawk
Cooper's Hawk
Sharp-shinned/Cooper's Hawk
American Goshawk
Cooper's Hawk/American Goshawk
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Accipiter sp.
Bald Eagle
Golden/Bald Eagle
Common Black Hawk
Harris's Hawk
Variable Hawk
Red-shouldered Hawk
Broad-winged Hawk
Swainson's Hawk
Zone-tailed Hawk
Red-tailed Hawk
Ferruginous Hawk
Buteo sp.
Buteo/eagle sp.
hawk sp.
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
eagle sp.
Barn Owl
Flammulated Owl
Western Screech-Owl
Eastern Screech-Owl
screech-owl sp.
Great Horned Owl
Northern Pygmy-Owl
Burrowing Owl
Spotted Owl
Long-eared Owl
Short-eared Owl
Long-eared/Short-eared Owl
Boreal Owl
Northern Saw-whet Owl
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
owl sp.
Belted Kingfisher
Williamson's Sapsucker
Red-naped Sapsucker
Yellow-bellied/Red-naped Sapsucker
sapsucker sp.
Lewis's Woodpecker
Red-headed Woodpecker
Acorn Woodpecker
Red-bellied Woodpecker
American Three-toed Woodpecker
Downy Woodpecker
Ladder-backed Woodpecker
Hairy Woodpecker
Downy/Hairy Woodpecker
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Northern Flicker
woodpecker sp.
Crested Caracara
American Kestrel
Merlin
Peregrine Falcon
Prairie Falcon
large falcon sp.
small falcon sp.
falcon sp.
diurnal raptor sp.
Cockatiel
Budgerigar
Monk Parakeet
parakeet sp.
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Olive-sided Flycatcher
Western Wood-Pewee
Eastern Wood-Pewee
Western x Eastern Wood-Pewee (hybrid)
Western/Eastern Wood-Pewee
pewee sp. (Contopus sp.)
Alder Flycatcher
Willow Flycatcher
Alder/Willow Flycatcher (Traill's Flycatcher)
Least Flycatcher
Hammond's Flycatcher
Gray Flycatcher
Dusky Flycatcher
Hammond's/Dusky Flycatcher
Gray/Dusky Flycatcher
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Western Flycatcher
Empidonax sp.
Black Phoebe
Eastern Phoebe
Black x Eastern Phoebe (hybrid)
Say's Phoebe
phoebe sp.
Vermilion Flycatcher
Ash-throated Flycatcher
Great Crested Flycatcher
Myiarchus sp.
Cassin's Kingbird
Western Kingbird
Cassin's/Western Kingbird
yellow-bellied kingbird sp.
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Eastern Kingbird
Scissor-tailed Flycatcher
new world flycatcher sp.
White-eyed Vireo
Bell's Vireo
Gray Vireo
Yellow-throated Vireo
Cassin's Vireo
Plumbeous Vireo
Cassin's/Plumbeous Vireo
solitary vireo sp.
Warbling Vireo
Red-eyed Vireo
vireo sp.
Loggerhead Shrike
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Loggerhead/Northern Shrike
Canada Jay
Pinyon Jay
Steller's Jay
Blue Jay
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
crow sp.
Common Raven
raven sp.
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
crow/raven sp.
Black-capped Chickadee
Mountain Chickadee
Black-capped x Mountain Chickadee (hybrid)
Black-capped/Mountain Chickadee
chickadee sp.
Juniper Titmouse
Horned Lark
Bank Swallow
Tree Swallow
Violet-green Swallow
Tree/Violet-green Swallow
Purple Martin
Northern Rough-winged Swallow
Barn Swallow
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Cliff Swallow
Barn x Cliff Swallow (hybrid)
Cave Swallow
Cliff/Cave Swallow
swallow sp.
Bushtit
Ruby-crowned Kinglet
Golden-crowned Kinglet
Ruby-crowned/Golden-crowned Kinglet
White-breasted Nuthatch
Pygmy Nuthatch
Red-breasted Nuthatch
nuthatch sp.
Brown Creeper
Blue-gray Gnatcatcher
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Rock Wren
Canyon Wren
House Wren
Pacific Wren
Winter Wren
Pacific/Winter Wren
Sedge Wren
Marsh Wren
Sedge/Marsh Wren
Carolina Wren
Bewick's Wren
wren sp.
American Dipper
European Starling
Gray Catbird
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Curve-billed Thrasher
Brown Thrasher
Bendire's Thrasher
Sage Thrasher
Northern Mockingbird
mimid sp.
Eastern Bluebird
Western Bluebird
Mountain Bluebird
bluebird sp.
Townsend's Solitaire
Veery
Swainson's Thrush
Hermit Thrush
Catharus sp.
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Wood Thrush
American Robin
thrush sp.
Cedar Waxwing
Bohemian/Cedar Waxwing
Phainopepla
House Sparrow
American Pipit
Sprague's Pipit
Evening Grosbeak
Pine Grosbeak
Brown-capped Rosy-Finch
rosy-finch sp.
House Finch
Cassin's Finch
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Haemorhous sp.
Red Crossbill
Cassia Crossbill
White-winged Crossbill
crossbill sp.
Pine Siskin
Lesser Goldfinch
Lawrence's Goldfinch
American Goldfinch
new world goldfinch sp.
finch sp.
Chestnut-collared Longspur
Thick-billed Longspur
longspur sp.
Cassin's Sparrow
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Grasshopper Sparrow
Chipping Sparrow
Clay-colored Sparrow
Black-chinned Sparrow
Field Sparrow
Brewer's Sparrow
Spizella sp.
Black-throated Sparrow
Lark Sparrow
Lark Bunting
Spizella sp./American Tree Sparrow
Fox Sparrow
Dark-eyed Junco
Rufous-collared Sparrow
White-crowned Sparrow
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
White-throated Sparrow
Sagebrush Sparrow
Vesper Sparrow
Savannah Sparrow
Baird's Sparrow
Song Sparrow
Lincoln's 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)
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
towhee sp.
new world sparrow sp.
Yellow-breasted Chat
Yellow-headed Blackbird
Bobolink
Western Meadowlark
Eastern Meadowlark
Western/Eastern Meadowlark
Chihuahuan Meadowlark
Eastern/Chihuahuan Meadowlark
Sturnella meadowlark sp.
Orchard Oriole
Hooded Oriole
Bullock's Oriole
Baltimore Oriole
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Bullock's x Baltimore Oriole (hybrid)
Bullock's/Baltimore Oriole
Scott's Oriole
new world oriole sp.
Red-winged Blackbird
Brown-headed Cowbird
Bronzed/Brown-headed Cowbird
Brewer's Blackbird
Rusty/Brewer's Blackbird
Common Grackle
Great-tailed Grackle
grackle sp.
blackbird sp.
Ovenbird
Northern Waterthrush
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Golden-winged Warbler
Black-and-white Warbler
Prothonotary Warbler
Swainson's Warbler
Orange-crowned Warbler
Lucy's Warbler
Nashville Warbler
Virginia's Warbler
MacGillivray's Warbler
MacGillivray's/Mourning Warbler
Kentucky Warbler
Common Yellowthroat
Hooded Warbler
American Redstart
Northern Parula
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Tropical Parula
Magnolia Warbler
Yellow Warbler
Chestnut-sided Warbler
Black-throated Blue Warbler
Pine Warbler
Yellow-rumped Warbler
Yellow-throated Warbler
Prairie Warbler
Grace's Warbler
Black-throated Gray Warbler
Townsend's Warbler
Black-throated Green Warbler
Setophaga sp.
Wilson's Warbler
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
new world warbler sp.
Hepatic Tanager
Summer Tanager
Scarlet Tanager
Western Tanager
tanager sp. (Piranga sp.)
Northern Cardinal
Northern Cardinal/Pyrrhuloxia
Rose-breasted Grosbeak
Black-headed Grosbeak
Rose-breasted x Black-headed Grosbeak (hybrid)
Rose-breasted/Black-headed Grosbeak
Blue Grosbeak
Lazuli Bunting
Indigo Bunting
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Lazuli x Indigo Bunting (hybrid)
Lazuli/Indigo Bunting
Painted Bunting
Passerina sp.
Dickcissel
passerine sp.
bird sp.

KEY:| = insufficient data | = rare to widespread

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