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Bird Observations

			Date Range: Jan-Dec, 1900-2023

Big Thompson River Bike Trail

Updated ~37 hr(s) ago.

191 species (+22 other taxa)	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Snow 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
teal sp.
Canvasback
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Redhead
Ring-necked Duck
Greater Scaup
Lesser Scaup
Bufflehead
Common Goldeneye
Hooded Merganser
Common Merganser
Red-breasted Merganser
Ruddy Duck
duck sp.
Wild Turkey
Pied-billed Grebe
Horned Grebe
Western Grebe
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Rock Pigeon
Eurasian Collared-Dove
Mourning Dove
Common Nighthawk
Chimney Swift
White-throated Swift
Black-chinned Hummingbird
Broad-tailed Hummingbird
hummingbird sp.
Sora
American Coot
Sandhill Crane
Killdeer
Wilson's Snipe
Spotted Sandpiper
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Solitary Sandpiper
Lesser Yellowlegs
Greater Yellowlegs
Baird's Sandpiper
shorebird sp.
Franklin's Gull
Ring-billed Gull
Herring Gull
California Gull
Iceland Gull
Larus sp.
gull sp.
Caspian Tern
Black Tern
Double-crested Cormorant
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
American White Pelican
Black-crowned Night Heron
Snowy Egret
Great Blue Heron
White-faced Ibis
Turkey Vulture
Osprey
Golden Eagle
Northern Harrier
Sharp-shinned Hawk
Cooper's Hawk
Sharp-shinned/Cooper's Hawk
American Goshawk
Accipiter sp.
Bald Eagle
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Broad-winged Hawk
Swainson's Hawk
Red-tailed Hawk
Rough-legged Hawk
Ferruginous Hawk
Eastern Screech-Owl
Great Horned Owl
Belted Kingfisher
Yellow-bellied Sapsucker
Lewis's Woodpecker
Downy Woodpecker
Hairy Woodpecker
Downy/Hairy Woodpecker
Northern Flicker
American Kestrel
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Merlin
Peregrine Falcon
falcon sp.
diurnal raptor sp.
Olive-sided Flycatcher
Western Wood-Pewee
Willow Flycatcher
Least Flycatcher
Hammond's Flycatcher
Gray Flycatcher
Dusky Flycatcher
Hammond's/Dusky Flycatcher
Western Flycatcher
Empidonax sp.
Black Phoebe
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Eastern Phoebe
Black x Eastern Phoebe (hybrid)
Say's Phoebe
Western Kingbird
Eastern Kingbird
Cassin's Vireo
Plumbeous Vireo
Warbling Vireo
vireo sp.
Loggerhead Shrike
Northern Shrike
Steller's Jay
Blue Jay
Black-billed Magpie
American Crow
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Common Raven
Black-capped Chickadee
Mountain Chickadee
Black-capped/Mountain Chickadee
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
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Brown Creeper
Blue-gray Gnatcatcher
Rock Wren
House Wren
Winter Wren
Marsh Wren
American Dipper
European Starling
Gray Catbird
Brown Thrasher
Sage Thrasher
Eastern Bluebird
Western Bluebird
Mountain Bluebird
Townsend's Solitaire
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Swainson's Thrush
Hermit Thrush
American Robin
thrush sp.
Cedar Waxwing
House Sparrow
Evening Grosbeak
House Finch
Cassin's Finch
Pine Siskin
Lesser Goldfinch
American Goldfinch
Chipping Sparrow
Clay-colored Sparrow
Brewer's Sparrow
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Lark Sparrow
American Tree Sparrow
Dark-eyed Junco
White-crowned Sparrow
Harris's Sparrow
White-throated Sparrow
Sagebrush Sparrow
Vesper Sparrow
Savannah Sparrow
Song Sparrow
Lincoln's Sparrow
Green-tailed Towhee
Spotted Towhee
new world sparrow sp.
Yellow-breasted Chat
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Yellow-headed Blackbird
Western Meadowlark
Orchard Oriole
Bullock's Oriole
Red-winged Blackbird
Brown-headed Cowbird
Brewer's Blackbird
Common Grackle
Great-tailed Grackle
Ovenbird
Northern Waterthrush
Black-and-white Warbler
Tennessee Warbler
Orange-crowned Warbler
Nashville Warbler
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Virginia's Warbler
MacGillivray's Warbler
Mourning Warbler
Common Yellowthroat
American Redstart
Northern Parula
Yellow Warbler
Yellow-rumped Warbler
Townsend's Warbler
Wilson's Warbler
Western Tanager
Rose-breasted Grosbeak
Black-headed Grosbeak
Rose-breasted/Black-headed Grosbeak
Blue Grosbeak
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Lazuli Bunting
Indigo Bunting
passerine sp.

KEY:| = insufficient data | = rare to widespread

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