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Bird Observations

			Date Range: Jan-Dec, 1900-2022

Rocky Mountain Arsenal NWR

Updated ~25 hr(s) ago.

276 species (+89 other taxa)	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Snow Goose
Ross's Goose
Snow/Ross's Goose
Greater White-fronted Goose
Cackling Goose
Snow x Cackling Goose (hybrid)
Canada Goose
Cackling/Canada Goose
Trumpeter Swan
Tundra Swan
Trumpeter/Tundra Swan
goose sp.
Wood Duck
Blue-winged Teal
Cinnamon Teal
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Blue-winged/Cinnamon Teal
Northern Shoveler
Gadwall
American Wigeon
Eurasian x American Wigeon (hybrid)
Mallard
Mallard/Mexican Duck
Northern Pintail
Green-winged Teal
teal sp.
dabbling duck sp.
Canvasback
Redhead
Ring-necked Duck
Greater Scaup
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Lesser Scaup
Greater/Lesser Scaup
Aythya sp.
Surf Scoter
Black Scoter
Long-tailed Duck
Bufflehead
Common Goldeneye
Barrow's Goldeneye
Common/Barrow's Goldeneye
Hooded Merganser
Common Merganser
Red-breasted Merganser
Common/Red-breasted Merganser
Ruddy Duck
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
duck sp.
Northern Bobwhite
Scaled Quail
Wild Turkey
Ring-necked Pheasant
Chukar
Pied-billed Grebe
Horned Grebe
Eared Grebe
Horned/Eared Grebe
Western Grebe
Clark's Grebe
Western/Clark's Grebe
grebe sp.
Rock Pigeon
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Eurasian Collared-Dove
White-winged Dove
Mourning Dove
pigeon/dove sp.
Common Nighthawk
Common Poorwill
Chimney Swift
Black-chinned Hummingbird
Calliope Hummingbird
Rufous Hummingbird
Broad-tailed Hummingbird
hummingbird sp.
Virginia Rail
Sora
American Coot
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Sandhill Crane
Black-necked Stilt
American Avocet
Black-bellied Plover
American Golden-Plover
Killdeer
Semipalmated Plover
Upland Sandpiper
Whimbrel
Long-billed Curlew
Marbled Godwit
Short-billed Dowitcher
Long-billed Dowitcher
Short-billed/Long-billed Dowitcher
Wilson's Snipe
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Wilson's Phalarope
Red-necked Phalarope
Red/Red-necked Phalarope
phalarope sp.
Spotted Sandpiper
Solitary Sandpiper
Lesser Yellowlegs
Willet
Greater Yellowlegs
Lesser/Greater Yellowlegs
Stilt Sandpiper
Sanderling
Baird's Sandpiper
White-rumped Sandpiper
Least Sandpiper
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Pectoral Sandpiper
Western Sandpiper
Semipalmated Sandpiper
Western/Semipalmated Sandpiper
peep sp.
Calidris sp.
large shorebird sp.
shorebird sp.
Sabine's Gull
Bonaparte's Gull
Franklin's Gull
Short-billed Gull
Ring-billed Gull
Herring Gull
Lesser Black-backed Gull
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
California Gull
Iceland Gull
Larus sp.
gull sp.
Caspian Tern
Black Tern
Forster's Tern
Common Tern
tern sp.
Common Loon
Double-crested Cormorant
Double-crested/Neotropic Cormorant
American White Pelican
American Bittern
Black-crowned Night Heron
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Little Blue Heron
Snowy Egret
Green Heron
Western Cattle Egret
Great Egret
Great Blue Heron
white egret sp.
White Ibis
White-faced Ibis
Glossy/White-faced Ibis
Turkey Vulture
Osprey
Golden Eagle
Mississippi Kite
Northern Harrier
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Hen/Northern Harrier
Sharp-shinned Hawk
Cooper's Hawk
Sharp-shinned/Cooper's Hawk
Accipiter sp.
Bald Eagle
Golden/Bald Eagle
Broad-winged Hawk
Swainson's Hawk
Red-tailed Hawk
Rough-legged 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
Eastern Screech-Owl
Great Horned Owl
Burrowing Owl
Short-eared Owl
owl sp.
Belted Kingfisher
Yellow-bellied Sapsucker
Red-naped Sapsucker
Yellow-bellied/Red-naped Sapsucker
Red-headed Woodpecker
Downy Woodpecker
Hairy Woodpecker
Downy/Hairy Woodpecker
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Northern Flicker
woodpecker sp.
American Kestrel
Merlin
Peregrine Falcon
Prairie Falcon
large falcon sp.
small falcon sp.
falcon sp.
Olive-sided Flycatcher
Western Wood-Pewee
Western/Eastern Wood-Pewee
pewee sp. (Contopus sp.)
Willow Flycatcher
Alder/Willow Flycatcher (Traill's Flycatcher)
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Least Flycatcher
Hammond's Flycatcher
Gray Flycatcher
Dusky Flycatcher
Hammond's/Dusky Flycatcher
Western Flycatcher
Empidonax sp.
Eastern Phoebe
Say's Phoebe
Vermilion Flycatcher
Ash-throated Flycatcher
Great Crested Flycatcher
Myiarchus sp.
Cassin's Kingbird
Western Kingbird
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Cassin's/Western Kingbird
Eastern Kingbird
Scissor-tailed Flycatcher
new world flycatcher sp.
Cassin's Vireo
Plumbeous Vireo
Cassin's/Plumbeous Vireo
Warbling Vireo
Red-eyed Vireo
vireo sp.
Loggerhead Shrike
Northern Shrike
Loggerhead/Northern Shrike
Blue Jay
Woodhouse's Scrub-Jay
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Black-billed Magpie
American Crow
Common Raven
raven sp.
crow/raven sp.
Black-capped Chickadee
Mountain Chickadee
Black-capped/Mountain Chickadee
chickadee sp.
Horned Lark
Bank Swallow
Tree Swallow
Violet-green Swallow
Tree/Violet-green Swallow
Northern Rough-winged Swallow
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Barn Swallow
Cliff Swallow
Cliff/Cave Swallow
swallow sp.
Bushtit
Ruby-crowned Kinglet
Golden-crowned Kinglet
Ruby-crowned/Golden-crowned Kinglet
White-breasted Nuthatch
Red-breasted Nuthatch
nuthatch sp.
Brown Creeper
Blue-gray Gnatcatcher
Rock Wren
House Wren
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Winter Wren
Marsh Wren
European Starling
Gray Catbird
Brown Thrasher
Sage Thrasher
Northern Mockingbird
Eastern Bluebird
Western Bluebird
Mountain Bluebird
bluebird sp.
Townsend's Solitaire
Veery
Swainson's Thrush
Hermit Thrush
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Catharus sp.
American Robin
thrush sp.
Cedar Waxwing
House Sparrow
American Pipit
Evening Grosbeak
House Finch
Common Redpoll
Red Crossbill
Pine Siskin
Lesser Goldfinch
American Goldfinch
Lapland Longspur
Chestnut-collared Longspur
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Thick-billed Longspur
longspur sp.
Cassin's Sparrow
Grasshopper Sparrow
Chipping Sparrow
Clay-colored Sparrow
Field Sparrow
Brewer's Sparrow
Spizella sp.
Black-throated Sparrow
Lark Sparrow
Lark Bunting
American Tree Sparrow
Spizella sp./American Tree Sparrow
Dark-eyed Junco
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
White-crowned Sparrow
Harris's Sparrow
White-throated Sparrow
Vesper Sparrow
Savannah Sparrow
Song Sparrow
Lincoln's Sparrow
Swamp Sparrow
Canyon Towhee
Green-tailed Towhee
Spotted Towhee
Spotted/Eastern Towhee (Rufous-sided Towhee)
towhee sp.
new world sparrow sp.
Yellow-breasted Chat
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Yellow-headed Blackbird
Western Meadowlark
Eastern Meadowlark
Sturnella meadowlark sp.
Orchard Oriole
Bullock's Oriole
Baltimore Oriole
Bullock's/Baltimore Oriole
new world oriole sp.
Red-winged Blackbird
Brown-headed Cowbird
Rusty Blackbird
Brewer's Blackbird
Rusty/Brewer's Blackbird
Common Grackle
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Great-tailed Grackle
grackle sp.
blackbird sp.
Ovenbird
Northern Waterthrush
Tennessee Warbler
Orange-crowned Warbler
Nashville Warbler
Virginia's Warbler
MacGillivray's Warbler
Common Yellowthroat
Hooded Warbler
American Redstart
Yellow Warbler
Blackpoll Warbler
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Black-throated Blue Warbler
Palm Warbler
Yellow-rumped Warbler
Prairie Warbler
Black-throated Gray Warbler
Townsend's Warbler
Wilson's Warbler
new world warbler sp.
Summer Tanager
Scarlet Tanager
Western Tanager
Rose-breasted Grosbeak
Black-headed Grosbeak
Blue Grosbeak
Lazuli Bunting
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Indigo Bunting
Lazuli/Indigo Bunting
Dickcissel
passerine sp.
bird sp.

KEY:| = insufficient data | = rare to widespread

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