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Bird Observations

			Date Range: Oct, 1900-2022

Boulder Reservoir complex--Boulder Reservoir

Updated ~27 hr(s) ago.

153 species (+34 other taxa)	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Snow Goose
Ross's Goose
Cackling Goose
Canada Goose
Cackling/Canada Goose
Tundra Swan
Wood Duck
Blue-winged Teal
Blue-winged/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.
dabbling duck sp.
Canvasback
Redhead
Ring-necked Duck
Greater Scaup
Lesser Scaup
Greater/Lesser Scaup
Aythya sp.
Surf Scoter
White-winged Scoter
Black Scoter
scoter sp.
Long-tailed Duck
Bufflehead
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Common Goldeneye
Common/Barrow's Goldeneye
Hooded Merganser
Common Merganser
Red-breasted Merganser
Common/Red-breasted Merganser
Ruddy Duck
duck sp.
Ring-necked Pheasant
Pied-billed Grebe
Horned Grebe
Red-necked Grebe
Eared Grebe
Horned/Eared Grebe
Western Grebe
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Clark's Grebe
Western/Clark's Grebe
grebe sp.
Rock Pigeon
Eurasian Collared-Dove
Mourning Dove
pigeon/dove sp.
Broad-tailed Hummingbird
Virginia Rail
Sora
American Coot
Sandhill Crane
American Avocet
Black-bellied Plover
Killdeer
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Long-billed Dowitcher
Short-billed/Long-billed Dowitcher
Wilson's Snipe
Red Phalarope
Red-necked Phalarope
Lesser Yellowlegs
Greater Yellowlegs
Sanderling
Dunlin
Baird's Sandpiper
Least Sandpiper
Pectoral Sandpiper
Sabine's Gull
Bonaparte's Gull
Franklin's Gull
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Ring-billed Gull
Herring Gull
Lesser Black-backed Gull
California Gull
Larus sp.
gull sp.
Forster's Tern
Arctic Tern
Common Tern
Common/Arctic Tern
Sterna sp.
Pacific Loon
Common Loon
loon sp.
Double-crested Cormorant
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
American White Pelican
Snowy Egret
Western Cattle Egret
Great Egret
Great Blue Heron
Turkey Vulture
Osprey
Golden Eagle
Northern Harrier
Sharp-shinned Hawk
Cooper's Hawk
Accipiter sp.
Bald Eagle
Red-tailed Hawk
Ferruginous Hawk
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Buteo sp.
Great Horned Owl
Belted Kingfisher
Downy Woodpecker
Hairy Woodpecker
Northern Flicker
American Kestrel
Merlin
Peregrine Falcon
Prairie Falcon
Say's Phoebe
Cassin's Kingbird
Fork-tailed Flycatcher
Plumbeous Vireo
Northern Shrike
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Pinyon Jay
Blue Jay
Black-billed Magpie
American Crow
Common Raven
raven sp.
crow/raven sp.
Black-capped Chickadee
Mountain Chickadee
Horned Lark
Barn Swallow
swallow sp.
Ruby-crowned Kinglet
White-breasted Nuthatch
Pygmy Nuthatch
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Red-breasted Nuthatch
Blue-gray Gnatcatcher
Rock Wren
House Wren
Marsh Wren
American Dipper
European Starling
Sage Thrasher
Eastern Bluebird
Western Bluebird
Mountain Bluebird
bluebird sp.
Townsend's Solitaire
Hermit Thrush
American Robin
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
House Sparrow
American Pipit
Sprague's Pipit
House Finch
Pine Siskin
Lesser Goldfinch
American Goldfinch
finch sp.
Chestnut-collared Longspur
Chipping Sparrow
Spizella sp.
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
Spotted Towhee
new world sparrow sp.
Yellow-headed Blackbird
Western Meadowlark
Sturnella meadowlark sp.
Red-winged Blackbird
Brown-headed Cowbird
Brewer's Blackbird
Common Grackle
blackbird sp.
Common Yellowthroat
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
American Redstart
Magnolia Warbler
Yellow-rumped Warbler
Townsend's Warbler
Wilson's Warbler
new world warbler sp.
passerine sp.

KEY:| = insufficient data | = rare to widespread

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