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Bird Observations

Date Range:
Jan-Dec, 1900-2021

Larimer

Updated ~38 hr(s) ago.

441 species (+195 other taxa) Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Bar-headed Goose
Snow Goose
Ross's Goose
Snow x Ross's Goose (hybrid)
Snow/Ross's Goose
Graylag Goose
Swan Goose
Greater White-fronted Goose
Domestic goose sp. (Domestic type)
Brant
Cackling Goose
Snow x Cackling Goose (hybrid)
Ross's x Cackling Goose (hybrid)
Greater White-fronted x Cackling Goose (hybrid)
Canada Goose
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Greater White-fronted x Canada Goose (hybrid)
Graylag x Canada Goose (hybrid)
Snow x Canada Goose (hybrid)
Ross's x Canada Goose (hybrid)
Cackling/Canada Goose
Snow/Ross's x Cackling/Canada Goose (hybrid)
Mute Swan
Black Swan
Trumpeter Swan
Tundra Swan
Trumpeter/Tundra Swan
swan sp.
goose sp.
Muscovy Duck
Wood Duck
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Blue-winged Teal
Cinnamon Teal
Blue-winged x Cinnamon Teal (hybrid)
Blue-winged/Cinnamon Teal
Northern Shoveler
Blue-winged Teal x Northern Shoveler (hybrid)
Cinnamon Teal x Northern Shoveler (hybrid)
Gadwall
Eurasian Wigeon
American Wigeon
Gadwall x American Wigeon (hybrid)
Eurasian/American Wigeon
Mallard
Gadwall x Mallard (hybrid)
American Wigeon x Mallard (hybrid)
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Mexican Duck
Mallard x Mexican Duck (hybrid)
Mallard/Mexican Duck
American Black Duck
Mallard x American Black Duck (hybrid)
Mallard/American Black Duck
Mottled Duck
Mallard/Mottled Duck
Northern Pintail
Mallard x Northern Pintail (hybrid)
Green-winged Teal
teal sp.
dabbling duck sp.
Canvasback
Redhead
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Ring-necked Duck
Greater Scaup
Lesser Scaup
Ring-necked Duck x Lesser Scaup (hybrid)
Redhead x scaup sp. (hybrid)
Greater/Lesser Scaup
Aythya sp.
Harlequin Duck
Surf Scoter
White-winged Scoter
Black Scoter
scoter sp.
Long-tailed Duck
Bufflehead
Common Goldeneye
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Bufflehead x Common Goldeneye (hybrid)
Barrow's Goldeneye
Common/Barrow's Goldeneye
Hooded Merganser
Common Goldeneye x Hooded Merganser (hybrid)
Common Merganser
Red-breasted Merganser
Common/Red-breasted Merganser
merganser sp.
Ruddy Duck
duck sp.
Helmeted Guineafowl
Northern Bobwhite
Gambel's Quail
Wild Turkey
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Greater Sage-Grouse
Dusky Grouse
White-tailed Ptarmigan
Ring-necked Pheasant
Indian Peafowl
Chukar
Pied-billed Grebe
Horned Grebe
Red-necked Grebe
Eared Grebe
Horned/Eared Grebe
Western Grebe
Clark's Grebe
Western x Clark's Grebe (hybrid)
Western/Clark's Grebe
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
grebe sp.
Rock Pigeon
Band-tailed Pigeon
Eurasian Collared-Dove
African Collared-Dove
Eurasian/African Collared-Dove
Inca Dove
White-winged Dove
Mourning Dove
pigeon/dove sp.
Groove-billed Ani
Yellow-billed Cuckoo
Black-billed Cuckoo
Lesser Nighthawk
Common Nighthawk
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
nighthawk sp.
Common Poorwill
Eastern Whip-poor-will
Eastern/Mexican Whip-poor-will
Black Swift
Chimney Swift
Chimney/Vaux's Swift
White-throated Swift
large swift sp.
swift sp.
Rivoli's Hummingbird
Blue-throated Mountain-gem
Ruby-throated Hummingbird
Black-chinned Hummingbird
Ruby-throated/Black-chinned Hummingbird
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Anna's Hummingbird
Costa's Hummingbird
Calliope Hummingbird
Rufous Hummingbird
Rufous/Allen's Hummingbird
Broad-tailed Hummingbird
Selasphorus sp.
hummingbird sp.
Virginia Rail
Sora
Common Gallinule
American Coot
Purple Gallinule
Black Rail
Sandhill Crane
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Black-necked Stilt
American Avocet
Black-bellied Plover
American Golden-Plover
American/Pacific Golden-Plover (Lesser Golden-Plover)
golden-plover sp.
Killdeer
Semipalmated Plover
Piping Plover
Mountain Plover
Snowy Plover
small plover sp.
plover sp.
Upland Sandpiper
Whimbrel
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Long-billed Curlew
Hudsonian Godwit
Marbled Godwit
godwit sp.
Short-billed Dowitcher
Long-billed Dowitcher
Short-billed/Long-billed Dowitcher
American Woodcock
Wilson's Snipe
Wilson's Phalarope
Red Phalarope
Red-necked Phalarope
Red/Red-necked Phalarope
phalarope sp.
Spotted Sandpiper
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Solitary Sandpiper
Lesser Yellowlegs
Willet
Greater Yellowlegs
Lesser/Greater Yellowlegs
Tringa sp.
Ruddy Turnstone
Red Knot
Stilt Sandpiper
Buff-breasted Sandpiper
Sanderling
Dunlin
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.
Scolopacidae sp.
shorebird sp.
Long-tailed Jaeger
Parasitic Jaeger
Long-tailed/Parasitic Jaeger
Pomarine Jaeger
Parasitic/Pomarine Jaeger
Ancient Murrelet
Little Gull
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Black-legged Kittiwake
Sabine's Gull
Bonaparte's Gull
Laughing Gull
Franklin's Gull
Short-billed Gull
Ring-billed Gull
Western Gull
Kelp Gull
Herring Gull
Great Black-backed Gull
Glaucous Gull
Herring x Glaucous Gull (hybrid)
Lesser Black-backed Gull
Herring x Lesser Black-backed Gull (hybrid)
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
California Gull
Herring x California Gull (hybrid)
Glaucous-winged Gull
Herring x Glaucous-winged Gull (hybrid)
Herring/Glaucous-winged Gull
Slaty-backed Gull
Iceland Gull
Herring/Iceland Gull
white-winged gull sp.
Larus sp.
gull sp.
Least Tern
Caspian Tern
Black Tern
Forster's Tern
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Arctic Tern
Common Tern
Forster's/Common Tern
Common/Arctic Tern
Sterna sp.
tern sp.
Red-throated Loon
Pacific Loon
Common Loon
Yellow-billed Loon
loon sp.
Double-crested Cormorant
Neotropic Cormorant
Double-crested/Neotropic Cormorant
cormorant sp.
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
American White Pelican
Brown Pelican
American Bittern
Least Bittern
Yellow-crowned Night Heron
Black-crowned Night Heron
Yellow-crowned/Black-crowned Night Heron
Little Blue Heron
Tricolored Heron
Snowy Egret
Green Heron
Western Cattle Egret
Great Egret
Great Blue Heron
heron sp.
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
white egret sp.
White Ibis
Glossy Ibis
White-faced Ibis
Glossy x White-faced Ibis (hybrid)
Glossy/White-faced Ibis
ibis sp.
Turkey Vulture
Osprey
Golden Eagle
Mississippi Kite
Northern Harrier
Sharp-shinned Hawk
Cooper's Hawk
Sharp-shinned/Cooper's Hawk
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
American Goshawk
Cooper's Hawk/American Goshawk
Accipiter sp.
Bald Eagle
Golden/Bald Eagle
Harris's Hawk
Red-shouldered Hawk
Broad-winged Hawk
Swainson's Hawk
Red-tailed Hawk
Rough-legged Hawk
Ferruginous Hawk
Buteo sp.
hawk sp.
eagle sp.
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Barn Owl
Flammulated Owl
Eastern Screech-Owl
Snowy Owl
Great Horned Owl
Northern Pygmy-Owl
Burrowing Owl
Long-eared Owl
Short-eared Owl
Long-eared/Short-eared Owl
Boreal Owl
Northern Saw-whet Owl
owl sp.
Belted Kingfisher
Williamson's Sapsucker
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Yellow-bellied Sapsucker
Red-naped Sapsucker
Yellow-bellied x Red-naped Sapsucker (hybrid)
Yellow-bellied/Red-naped Sapsucker
sapsucker sp.
Lewis's Woodpecker
Red-headed Woodpecker
Acorn Woodpecker
Red-bellied Woodpecker
American Three-toed Woodpecker
Downy Woodpecker
Hairy Woodpecker
Downy/Hairy Woodpecker
Northern Flicker
woodpecker sp.
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
American Kestrel
Merlin
Gyrfalcon
Peregrine Falcon
Prairie Falcon
large falcon sp.
small falcon sp.
falcon sp.
diurnal raptor sp.
Cockatiel
Budgerigar
parakeet sp.
Olive-sided Flycatcher
Western Wood-Pewee
Eastern Wood-Pewee
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Western/Eastern Wood-Pewee
pewee sp. (Contopus sp.)
Yellow-bellied Flycatcher
Alder Flycatcher
Willow Flycatcher
Alder/Willow Flycatcher (Traill's Flycatcher)
Least Flycatcher
Hammond's Flycatcher
Gray Flycatcher
Dusky Flycatcher
Hammond's/Dusky Flycatcher
Gray/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
phoebe sp.
Vermilion Flycatcher
Ash-throated Flycatcher
Great Crested Flycatcher
Myiarchus sp.
Cassin's Kingbird
Western Kingbird
Cassin's/Western Kingbird
yellow-bellied kingbird sp.
Eastern Kingbird
Scissor-tailed Flycatcher
Fork-tailed Flycatcher
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
new world flycatcher sp.
White-eyed Vireo
Bell's 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
Red-eyed Vireo
vireo sp.
Loggerhead Shrike
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Northern Shrike
Loggerhead/Northern Shrike
Northern/Great Gray Shrike
shrike sp.
Canada Jay
Pinyon Jay
Steller's Jay
Blue Jay
Woodhouse's Scrub-Jay
jay sp.
Black-billed Magpie
Clark's Nutcracker
American Crow
Chihuahuan Raven
Common Raven
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
raven sp.
crow/raven sp.
Black-capped Chickadee
Mountain Chickadee
Black-capped x Mountain Chickadee (hybrid)
Black-capped/Mountain Chickadee
chickadee sp.
Juniper Titmouse
Horned Lark
Bank Swallow
Tree Swallow
Violet-green Swallow
Tree/Violet-green Swallow
Purple Martin
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
Pygmy Nuthatch
Red-breasted Nuthatch
nuthatch sp.
Brown Creeper
Blue-gray Gnatcatcher
Rock Wren
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Canyon Wren
House Wren
Pacific Wren
Winter Wren
Pacific/Winter Wren
Sedge Wren
Marsh Wren
Sedge/Marsh Wren
Carolina Wren
Bewick's Wren
wren sp.
American Dipper
European Starling
Gray Catbird
Curve-billed Thrasher
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Brown Thrasher
Sage Thrasher
Northern Mockingbird
mimid sp.
Eastern Bluebird
Western Bluebird
Mountain Bluebird
bluebird sp.
Townsend's Solitaire
Varied Thrush
Veery
Gray-cheeked Thrush
Swainson's Thrush
Hermit Thrush
Catharus sp.
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Wood Thrush
American Robin
thrush sp.
Bohemian Waxwing
Cedar Waxwing
Bohemian/Cedar Waxwing
Phainopepla
House Sparrow
American Pipit
Sprague's Pipit
Evening Grosbeak
Pine Grosbeak
Gray-crowned Rosy-Finch
Black Rosy-Finch
Brown-capped Rosy-Finch
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
rosy-finch sp.
House Finch
Purple Finch
Cassin's Finch
Purple/Cassin's Finch
Haemorhous sp.
Common Redpoll
Hoary Redpoll
Common/Hoary Redpoll
Red Crossbill
White-winged Crossbill
crossbill sp.
European Goldfinch
Pine Siskin
Lesser Goldfinch
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
American Goldfinch
new world goldfinch sp.
finch sp.
Lapland Longspur
Chestnut-collared Longspur
Smith's Longspur
Thick-billed Longspur
longspur sp.
Snow Bunting
Cassin's Sparrow
Grasshopper Sparrow
Chipping Sparrow
Clay-colored Sparrow
Chipping x Clay-colored Sparrow (hybrid)
Field Sparrow
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Brewer's Sparrow
Spizella sp.
Black-throated Sparrow
Lark Sparrow
Lark Bunting
American Tree Sparrow
Spizella sp./American Tree Sparrow
Fox Sparrow
Dark-eyed Junco
White-crowned Sparrow
Golden-crowned Sparrow
Harris's Sparrow
White-throated Sparrow
Zonotrichia sp.
Sagebrush Sparrow
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Vesper Sparrow
LeConte's Sparrow
Savannah Sparrow
Baird's Sparrow
Grasshopper/Baird's Sparrow
Song Sparrow
Lincoln's Sparrow
Swamp Sparrow
Canyon Towhee
Rufous-crowned Sparrow
Green-tailed Towhee
Spotted Towhee
Eastern Towhee
Spotted x Eastern Towhee (hybrid)
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
Western/Eastern Meadowlark
Chihuahuan Meadowlark
Eastern/Chihuahuan Meadowlark
Sturnella meadowlark sp.
Orchard Oriole
Streak-backed Oriole
Bullock's Oriole
Baltimore Oriole
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Bullock's x Baltimore Oriole (hybrid)
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
Great-tailed Grackle
grackle sp.
blackbird sp.
Ovenbird
Worm-eating Warbler
Louisiana Waterthrush
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Northern Waterthrush
Louisiana/Northern Waterthrush
Golden-winged Warbler
Blue-winged Warbler
Golden-winged x Blue-winged Warbler (hybrid)
Brewster's Warbler (hybrid)
Black-and-white Warbler
Prothonotary Warbler
Swainson's Warbler
Tennessee Warbler
Orange-crowned Warbler
Nashville Warbler
Virginia's Warbler
Leiothlypis sp.
Connecticut Warbler
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
MacGillivray's Warbler
Mourning Warbler
MacGillivray's/Mourning Warbler
Kentucky Warbler
Common Yellowthroat
Hooded Warbler
American Redstart
Cape May Warbler
Cerulean Warbler
Northern Parula
Tropical Parula
Magnolia Warbler
Bay-breasted Warbler
Blackburnian Warbler
Yellow Warbler
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Chestnut-sided Warbler
Blackpoll Warbler
Black-throated Blue Warbler
Palm Warbler
Pine Warbler
Yellow-rumped Warbler
Yellow-throated Warbler
Grace's 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
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Painted Redstart
new world warbler sp.
Summer Tanager
Scarlet Tanager
Western Tanager
tanager sp. (Piranga sp.)
Northern Cardinal
Rose-breasted Grosbeak
Black-headed Grosbeak
Rose-breasted x Black-headed Grosbeak (hybrid)
Rose-breasted/Black-headed Grosbeak
Blue Grosbeak
Lazuli Bunting
Indigo Bunting
Lazuli x Indigo Bunting (hybrid)
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Lazuli/Indigo Bunting
Painted Bunting
Passerina sp.
Dickcissel
passerine sp.
bird sp.

KEY:| = insufficient data | = rare to widespread

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