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Bird Observations

			Date Range: Sep, 1900-2023

Larimer

Updated ~25 hr(s) ago.

334 species (+125 other taxa)	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Greater White-fronted Goose
Domestic goose sp. (Domestic type)
Cackling Goose
Canada Goose
Cackling/Canada Goose
Mute Swan
Black Swan
Trumpeter Swan
goose sp.
Wood Duck
Blue-winged Teal
Cinnamon Teal
Blue-winged/Cinnamon Teal
Northern Shoveler
Gadwall
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
American Wigeon
Eurasian/American Wigeon
Mallard
Mexican Duck
Mallard/Mexican Duck
Northern Pintail
Mallard x Northern Pintail (hybrid)
Green-winged Teal
teal sp.
dabbling duck sp.
Canvasback
Redhead
Ring-necked Duck
Lesser Scaup
Greater/Lesser Scaup
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Aythya sp.
Bufflehead
Common Goldeneye
Hooded Merganser
Common Merganser
Ruddy Duck
duck sp.
Northern Bobwhite
Wild Turkey
Greater Sage-Grouse
Dusky Grouse
White-tailed Ptarmigan
Ring-necked Pheasant
Chukar
Pied-billed Grebe
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Horned 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
White-winged Dove
Mourning Dove
pigeon/dove sp.
Yellow-billed Cuckoo
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Lesser Nighthawk
Common Nighthawk
nighthawk sp.
Common Poorwill
Eastern Whip-poor-will
nightjar sp.
Chimney Swift
Chimney/Vaux's Swift
White-throated Swift
large swift sp.
swift sp.
Ruby-throated Hummingbird
Black-chinned Hummingbird
Ruby-throated/Black-chinned Hummingbird
Calliope Hummingbird
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Rufous Hummingbird
Rufous/Allen's Hummingbird
Broad-tailed Hummingbird
Selasphorus sp.
hummingbird sp.
Virginia Rail
Sora
American Coot
Purple Gallinule
Sandhill Crane
Black-necked Stilt
American Avocet
Black-bellied Plover
American Golden-Plover
American/Pacific Golden-Plover (Lesser Golden-Plover)
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
golden-plover sp.
Killdeer
Semipalmated Plover
Mountain Plover
Snowy Plover
plover sp.
Upland Sandpiper
Long-billed Curlew
Hudsonian Godwit
Marbled Godwit
Short-billed Dowitcher
Long-billed Dowitcher
Short-billed/Long-billed Dowitcher
Wilson's Snipe
Wilson's Phalarope
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Red Phalarope
Red-necked Phalarope
Red/Red-necked Phalarope
phalarope sp.
Spotted Sandpiper
Solitary Sandpiper
Lesser Yellowlegs
Willet
Greater Yellowlegs
Lesser/Greater Yellowlegs
Red Knot
Stilt Sandpiper
Buff-breasted Sandpiper
Sanderling
Dunlin
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Baird's Sandpiper
White-rumped Sandpiper
Least Sandpiper
Pectoral Sandpiper
Western Sandpiper
Semipalmated Sandpiper
Western/Semipalmated Sandpiper
peep sp.
shorebird sp.
Long-tailed Jaeger
Parasitic Jaeger
Long-tailed/Parasitic Jaeger
Pomarine Jaeger
jaeger sp.
Sabine's Gull
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Bonaparte's Gull
Franklin's Gull
Short-billed Gull
Ring-billed Gull
Herring Gull
Lesser Black-backed Gull
California Gull
Herring/Iceland Gull
Larus sp.
gull sp.
Caspian Tern
Black Tern
Forster's Tern
Arctic Tern
Common Tern
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Forster's/Common Tern
Common/Arctic Tern
Sterna sp.
tern sp.
Common Loon
loon sp.
Double-crested Cormorant
Double-crested/Neotropic Cormorant
American White Pelican
Brown Pelican
American Bittern
Yellow-crowned Night Heron
Black-crowned Night Heron
Yellow-crowned/Black-crowned Night Heron
Snowy Egret
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Green Heron
Western Cattle Egret
Great Egret
Great Blue Heron
heron sp.
white egret sp.
White Ibis
White-faced Ibis
Glossy/White-faced Ibis
ibis sp.
Turkey Vulture
Osprey
Golden Eagle
Mississippi Kite
Northern Harrier
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Sharp-shinned Hawk
Cooper's Hawk
Sharp-shinned/Cooper's Hawk
American Goshawk
Accipiter sp.
Bald Eagle
Golden/Bald Eagle
Red-shouldered Hawk
Broad-winged Hawk
Swainson's Hawk
Red-tailed Hawk
Rough-legged Hawk
Ferruginous Hawk
Buteo sp.
hawk sp.
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
eagle sp.
Barn Owl
Flammulated Owl
Eastern Screech-Owl
Great Horned Owl
Northern Pygmy-Owl
Burrowing Owl
Long-eared Owl
Short-eared Owl
Boreal Owl
Northern Saw-whet Owl
owl sp.
Belted Kingfisher
Williamson's Sapsucker
Red-naped Sapsucker
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Yellow-bellied/Red-naped Sapsucker
sapsucker sp.
Lewis's Woodpecker
Red-headed Woodpecker
Acorn Woodpecker
American Three-toed Woodpecker
Downy Woodpecker
Hairy Woodpecker
Downy/Hairy Woodpecker
Northern Flicker
woodpecker sp.
American Kestrel
Merlin
Peregrine Falcon
Prairie Falcon
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
large falcon sp.
small falcon sp.
falcon sp.
diurnal raptor sp.
Budgerigar
parakeet sp.
Olive-sided Flycatcher
Western Wood-Pewee
Western/Eastern Wood-Pewee
pewee sp. (Contopus sp.)
Willow Flycatcher
Alder/Willow Flycatcher (Traill's Flycatcher)
Least Flycatcher
Hammond's Flycatcher
Gray Flycatcher
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Dusky Flycatcher
Hammond's/Dusky Flycatcher
Gray/Dusky Flycatcher
Western Flycatcher
Empidonax sp.
Black Phoebe
Eastern Phoebe
Black x Eastern Phoebe (hybrid)
Say's Phoebe
phoebe sp.
Ash-throated Flycatcher
Great Crested Flycatcher
Cassin's Kingbird
Western Kingbird
Cassin's/Western Kingbird
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
yellow-bellied kingbird sp.
Eastern Kingbird
Scissor-tailed Flycatcher
Fork-tailed Flycatcher
new world flycatcher sp.
White-eyed Vireo
Yellow-throated Vireo
Cassin's Vireo
Blue-headed Vireo
Cassin's/Blue-headed Vireo
Plumbeous Vireo
Cassin's/Plumbeous Vireo
solitary vireo sp.
Philadelphia Vireo
Warbling Vireo
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Red-eyed Vireo
vireo sp.
Loggerhead Shrike
Loggerhead/Northern Shrike
Canada Jay
Pinyon Jay
Steller's Jay
Blue Jay
Woodhouse's Scrub-Jay
jay sp.
Black-billed Magpie
Clark's Nutcracker
American Crow
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/Mountain Chickadee
chickadee sp.
Horned Lark
Bank Swallow
Tree Swallow
Violet-green Swallow
Tree/Violet-green Swallow
Northern Rough-winged Swallow
Barn Swallow
Cliff Swallow
Cliff/Cave Swallow
swallow sp.
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Bushtit
Ruby-crowned Kinglet
Golden-crowned Kinglet
White-breasted Nuthatch
Pygmy Nuthatch
Red-breasted Nuthatch
nuthatch sp.
Brown Creeper
Blue-gray Gnatcatcher
Rock Wren
Canyon Wren
House Wren
Winter Wren
Pacific/Winter Wren
Marsh Wren
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Sedge/Marsh Wren
wren sp.
American Dipper
European Starling
Gray Catbird
Curve-billed Thrasher
Brown Thrasher
Sage Thrasher
Northern Mockingbird
Eastern Bluebird
Western Bluebird
Mountain Bluebird
bluebird sp.
Townsend's Solitaire
Varied Thrush
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Veery
Gray-cheeked Thrush
Swainson's Thrush
Hermit Thrush
Catharus sp.
Wood Thrush
American Robin
thrush sp.
Cedar Waxwing
Bohemian/Cedar Waxwing
Phainopepla
House Sparrow
American Pipit
Evening Grosbeak
Pine Grosbeak
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Gray-crowned Rosy-Finch
Brown-capped Rosy-Finch
rosy-finch sp.
House Finch
Cassin's Finch
Haemorhous sp.
Red Crossbill
Cassia Crossbill
Red/Cassia Crossbill
White-winged Crossbill
crossbill sp.
Pine Siskin
Lesser Goldfinch
American Goldfinch
new world goldfinch sp.
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
finch sp.
Lapland Longspur
Chestnut-collared Longspur
Smith's Longspur
Thick-billed Longspur
longspur sp.
Cassin's Sparrow
Grasshopper Sparrow
Chipping Sparrow
Clay-colored Sparrow
Field Sparrow
Brewer's Sparrow
Spizella sp.
Lark Sparrow
Lark Bunting
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
American Tree Sparrow
Fox Sparrow
Dark-eyed Junco
White-crowned Sparrow
White-throated Sparrow
Vesper Sparrow
LeConte's Sparrow
Savannah Sparrow
Baird's Sparrow
Song Sparrow
Lincoln's Sparrow
Swamp Sparrow
Green-tailed Towhee
Spotted Towhee
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
Sturnella meadowlark sp.
Orchard Oriole
Bullock's Oriole
Bullock's/Baltimore Oriole
new world oriole sp.
Red-winged Blackbird
Brown-headed Cowbird
Brewer's Blackbird
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Rusty/Brewer's Blackbird
Common Grackle
Great-tailed Grackle
blackbird sp.
Ovenbird
Northern Waterthrush
Black-and-white Warbler
Prothonotary Warbler
Tennessee Warbler
Orange-crowned Warbler
Nashville Warbler
Virginia's Warbler
Connecticut Warbler
MacGillivray's Warbler
Mourning Warbler
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
MacGillivray's/Mourning Warbler
Common Yellowthroat
Hooded Warbler
American Redstart
Northern Parula
Magnolia Warbler
Bay-breasted Warbler
Blackburnian Warbler
Yellow Warbler
Chestnut-sided Warbler
Blackpoll Warbler
Black-throated Blue Warbler
Palm Warbler
Pine Warbler
Yellow-rumped Warbler
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Yellow-throated Warbler
Black-throated Gray Warbler
Townsend's Warbler
Black-throated Green Warbler
Townsend's x Black-throated Green Warbler (hybrid)
Setophaga sp.
Canada Warbler
Wilson's Warbler
new world warbler sp.
Summer Tanager
Scarlet Tanager
Western Tanager
tanager sp. (Piranga sp.)
Northern Cardinal
Rose-breasted Grosbeak
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Black-headed Grosbeak
Rose-breasted/Black-headed Grosbeak
Blue Grosbeak
Lazuli Bunting
Indigo Bunting
Lazuli/Indigo Bunting
Dickcissel
passerine sp.
bird sp.

KEY:| = insufficient data | = rare to widespread

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