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Bird Observations

			Date Range: Jan-Dec, 1900-2022

St. Vrain Greenway

Updated ~26 hr(s) ago.

176 species (+24 other taxa)	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Snow Goose
Ross's Goose
Greater White-fronted Goose
Cackling Goose
Canada Goose
Cackling/Canada Goose
Wood Duck
Blue-winged Teal
Cinnamon Teal
Northern Shoveler
Gadwall
American Wigeon
Mallard
Northern Pintail
Green-winged Teal
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
teal sp.
Canvasback
Redhead
Ring-necked Duck
Lesser Scaup
Bufflehead
Common Goldeneye
Barrow's Goldeneye
Hooded Merganser
Common Merganser
duck sp.
Northern Bobwhite
Wild Turkey
Ring-necked Pheasant
Pied-billed Grebe
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Eared Grebe
Western Grebe
Clark's Grebe
Western/Clark's Grebe
Rock Pigeon
Eurasian Collared-Dove
White-winged Dove
Mourning Dove
Common Nighthawk
Chimney Swift
White-throated Swift
Broad-tailed Hummingbird
Virginia Rail
Sora
American Coot
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Sandhill Crane
Black-necked Stilt
American Avocet
Killdeer
plover sp.
Long-billed Dowitcher
Wilson's Snipe
Wilson's Phalarope
Spotted Sandpiper
Solitary Sandpiper
Lesser Yellowlegs
Greater Yellowlegs
Lesser/Greater Yellowlegs
Semipalmated Sandpiper
Franklin's Gull
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Ring-billed Gull
California Gull
Iceland Gull
gull sp.
Caspian Tern
Forster's Tern
Common Loon
Double-crested Cormorant
American White Pelican
Black-crowned Night Heron
Little Blue Heron
Snowy Egret
Green Heron
Great Egret
Great Blue Heron
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Turkey Vulture
Osprey
Golden Eagle
Northern Harrier
Sharp-shinned Hawk
Cooper's Hawk
Bald Eagle
Swainson's Hawk
Red-tailed Hawk
Rough-legged Hawk
Ferruginous Hawk
hawk sp.
eagle sp.
Great Horned Owl
Belted Kingfisher
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Downy Woodpecker
Hairy Woodpecker
Downy/Hairy Woodpecker
Northern Flicker
woodpecker sp.
American Kestrel
Merlin
Prairie Falcon
diurnal raptor sp.
Western Wood-Pewee
Dusky Flycatcher
Western Flycatcher
Empidonax sp.
Say's Phoebe
Western Kingbird
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Eastern Kingbird
Cassin's Vireo
Plumbeous Vireo
Warbling Vireo
Red-eyed Vireo
Loggerhead Shrike
Northern Shrike
Steller's Jay
Blue Jay
Black-billed Magpie
American Crow
Common Raven
Black-capped Chickadee
Mountain Chickadee
Black-capped/Mountain Chickadee
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
chickadee sp.
Horned Lark
Bank Swallow
Tree Swallow
Violet-green Swallow
Northern Rough-winged Swallow
Barn Swallow
Cliff Swallow
swallow sp.
Bushtit
Ruby-crowned Kinglet
White-breasted Nuthatch
Red-breasted Nuthatch
Brown Creeper
Canyon Wren
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
House Wren
Marsh Wren
wren sp.
American Dipper
European Starling
Gray Catbird
Sage Thrasher
Mountain Bluebird
Townsend's Solitaire
Swainson's Thrush
Hermit Thrush
Catharus sp.
American Robin
Cedar Waxwing
House Sparrow
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
American Pipit
House Finch
Pine Siskin
Lesser Goldfinch
American Goldfinch
Chipping Sparrow
Clay-colored Sparrow
Brewer's Sparrow
Spizella sp.
Lark Sparrow
Lark Bunting
American Tree Sparrow
Spizella sp./American Tree Sparrow
Dark-eyed Junco
White-crowned Sparrow
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Vesper Sparrow
Savannah Sparrow
Song Sparrow
Lincoln's Sparrow
Swamp Sparrow
Green-tailed Towhee
Spotted Towhee
new world sparrow sp.
Yellow-breasted Chat
Yellow-headed Blackbird
Western Meadowlark
Orchard Oriole
Bullock's Oriole
Baltimore Oriole
Bullock's/Baltimore Oriole
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Red-winged Blackbird
Brown-headed Cowbird
Brewer's Blackbird
Common Grackle
blackbird sp.
Orange-crowned Warbler
Nashville Warbler
Common Yellowthroat
Yellow Warbler
Blackpoll Warbler
Palm Warbler
Yellow-rumped Warbler
Black-throated Gray Warbler
Wilson's Warbler
Western Tanager
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Rose-breasted Grosbeak
Black-headed Grosbeak
Blue Grosbeak
Lazuli Bunting
passerine sp.

KEY:| = insufficient data | = rare to widespread

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