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Western Gull - Larus occidentalis
7 Records
© Glenn Walbek
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Records by Year
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Records Accepted by Chair
Create Your Own Query
Slideshow of CBRC Reported Birds
Select Species
Black-bellied Whistling-Duck
Fulvous Whistling-Duck
Snow Goose
Pink-footed Goose
Brant
*Brant (Atlantic)
*Brant (Black)
Barnacle Goose
Cackling Goose
*Cackling Goose (Aleutian)
*Cackling Goose (Ridgway's)
*Canada Goose (Dusky)
Trumpeter Swan
Tundra Swan
Wood Duck
Garganey
Eurasian Wigeon
Mexican Duck
American Black Duck
*American Black Duck x Mallard
Mottled Duck
Tufted Duck
Harlequin Duck
Surf Scoter
Black Scoter
Long-tailed Duck
*Duck Hybrid
Scaled Quail
California Quail
Wild Turkey
Ruffed Grouse
Gunnison Sage-Grouse
Dusky Grouse
Horned Grebe
Red-necked Grebe
Band-tailed Pigeon
Eurasian Collared-Dove
Inca Dove
Common Ground Dove
Ruddy Ground Dove
White-winged Dove
Groove-billed Ani
Greater Roadrunner
Yellow-billed Cuckoo
Black-billed Cuckoo
Lesser Nighthawk
Common Nighthawk
Common Poorwill
Eastern Whip-poor-will
Mexican Whip-poor-will
*Whip-poor-will sp.
Black Swift
Chimney Swift
Vaux's Swift
White-throated Swift
Mexican Violetear
Rivoli’s Hummingbird
Blue-throated Mountain-gem
Ruby-throated Hummingbird
Black-chinned Hummingbird
Anna's Hummingbird
Costa's Hummingbird
Calliope Hummingbird
Broad-tailed Hummingbird
Broad-billed Hummingbird
White-eared Hummingbird
King Rail
Common Gallinule
Purple Gallinule
Yellow Rail
Black Rail
Limpkin
Sandhill Crane
Whooping Crane
Black-necked Stilt
Black-bellied Plover
American Golden-Plover
Piping Plover
Mountain Plover
Snowy Plover
Upland Sandpiper
Whimbrel
Eskimo Curlew
Long-billed Curlew
Hudsonian Godwit
Marbled Godwit
Ruddy Turnstone
Red Knot
Ruff
Sharp-tailed Sandpiper
Curlew Sandpiper
Dunlin
Purple Sandpiper
Baird's Sandpiper
Least Sandpiper
White-rumped Sandpiper
Buff-breasted Sandpiper
Pectoral Sandpiper
Western Sandpiper
Short-billed Dowitcher
American Woodcock
Lesser Yellowlegs
Greater Yellowlegs
Red-necked Phalarope
Red Phalarope
*Jaeger sp.
Pomarine Jaeger
Parasitic Jaeger
Long-tailed Jaeger
Long-billed Murrelet
Ancient Murrelet
Black-legged Kittiwake
Ivory Gull
Sabine's Gull
Bonaparte's Gull
Black-headed Gull
Little Gull
Ross's Gull
Laughing Gull
Franklin's Gull
Short-billed Gull
Western Gull
Herring Gull
Iceland Gull
Lesser Black-backed Gull
Slaty-backed Gull
Glaucous-winged Gull
*Glaucous-winged Gull hybrid
Great Black-backed Gull
Kelp Gull
Sooty Tern
Least Tern
Caspian Tern
Arctic Tern
Royal Tern
Sandwich Tern
Black Skimmer
Red-throated Loon
Arctic Loon
Pacific Loon
Yellow-billed Loon
Wood Stork
Magnificent Frigatebird
Brown Booby
Anhinga
Neotropic Cormorant
American White Pelican
Brown Pelican
Least Bittern
Little Blue Heron
Tricolored Heron
Reddish Egret
Yellow-crowned Night Heron
Green Heron
Great Egret
Western Cattle-Egret
White Ibis
Glossy Ibis
*White-faced X Glossy Ibis
Roseate Spoonbill
Black Vulture
Osprey
White-tailed Kite
Swallow-tailed Kite
Cooper's Hawk
American Goshawk
Mississippi Kite
Common Black Hawk
Harris's Hawk
Variable Hawk
Red-shouldered Hawk
Broad-winged Hawk
Zone-tailed Hawk
Red-tailed Hawk
*Red-tailed Hawk (Krider's)
Rough-legged Hawk
Snowy Owl
Northern Pygmy-Owl
Spotted Owl
Barred Owl
Long-eared Owl
Boreal Owl
Northern Saw-whet Owl
Red-headed Woodpecker
Acorn Woodpecker
Golden-fronted Woodpecker
Red-bellied Woodpecker
Williamson's Sapsucker
Yellow-bellied Sapsucker
Red-naped Sapsucker
Red-breasted Sapsucker
Ladder-backed Woodpecker
Northern Flicker
Crested Caracara
Merlin
*Merlin (Black)
Gyrfalcon
Dusky-capped Flycatcher
Great Crested Flycatcher
Brown-crested Flycatcher
Great Kiskadee
Sulphur-bellied Flycatcher
Tropical Kingbird
Couch's Kingbird
Thick-billed Kingbird
Eastern Kingbird
Scissor-tailed Flycatcher
Fork-tailed Flycatcher
Olive-sided Flycatcher
Eastern Wood-Pewee
Yellow-bellied Flycatcher
Acadian Flycatcher
Alder Flycatcher
Least Flycatcher
Hammond's Flycatcher
Gray Flycatcher
Buff-breasted Flycatcher
Black Phoebe
Eastern Phoebe
Say's Phoebe
Vermilion Flycatcher
White-eyed Vireo
Bell's Vireo
Gray Vireo
Yellow-throated Vireo
Cassin's Vireo
Blue-headed Vireo
Philadelphia Vireo
Yellow-green Vireo
Loggerhead Shrike
Blue Jay
Woodhouse's Scrub-Jay
Clark's Nutcracker
Chihuahuan Raven
Juniper Titmouse
Bank Swallow
Tree Swallow
Purple Martin
Cave Swallow
Bushtit
Cedar Waxwing
Phainopepla
Pygmy Nuthatch
Canyon Wren
Cactus Wren
Bewick's Wren
Carolina Wren
Northern House Wren
Pacific Wren
Winter Wren
Sedge Wren
*Eastern Marsh Wren
Gray Catbird
Curve-billed Thrasher
Brown Thrasher
Long-billed Thrasher
Bendire's Thrasher
Crissal Thrasher
Northern Mockingbird
American Dipper
Eastern Bluebird
Western Bluebird
Gray-cheeked Thrush
*Swainson's Thrush (Russet-backed)
Hermit Thrush
Wood Thrush
Rufous-backed Robin
Varied Thrush
Sprague's Pipit
Brambling
Gray-crowned Rosy-Finch
Black Rosy-Finch
Purple Finch
Redpoll
*Hoary Redpoll
*Redpoll sp.
Red Crossbill
Cassia Crossbill
White-winged Crossbill
Lesser Goldfinch
Lawrence's Goldfinch
Lapland Longspur
Chestnut-collared Longspur
Smith's Longspur
Thick-billed Longspur
Snow Bunting
Cassin's Sparrow
Grasshopper Sparrow
Black-throated Sparrow
Lark Bunting
Chipping Sparrow
Clay-colored Sparrow
Black-chinned Sparrow
Field Sparrow
Fox Sparrow
*Fox Sparrow (Red)
*Fox Sparrow (Slate-colored)
*Fox Sparrow (Sooty)
*Dark-eyed Junco (White-winged)
Golden-crowned Sparrow
Harris's Sparrow
White-throated Sparrow
Sagebrush Sparrow
LeConte's Sparrow
Nelson's Sparrow
Baird's Sparrow
Henslow's Sparrow
Savannah Sparrow
Canyon Towhee
Green-tailed Towhee
Spotted Towhee
Eastern Towhee
Yellow-breasted Chat
Yellow-headed Blackbird
Bobolink
Chihuahuan Meadowlark
Eastern Meadowlark
Orchard Oriole
Hooded Oriole
Streak-backed Oriole
Bullock's Oriole
Baltimore Oriole
*Bullocks x Baltimore Oriole
Scott's Oriole
Bronzed Cowbird
Rusty Blackbird
Common Grackle
Great-tailed Grackle
Ovenbird
Worm-eating Warbler
Louisiana Waterthrush
Northern Waterthrush
Golden-winged Warbler
Blue-winged Warbler
*Brewster's Warbler
Black-and-white Warbler
Prothonotary Warbler
Swainson's Warbler
Tennessee Warbler
Orange-crowned Warbler
Lucy's Warbler
Virginia's Warbler
Connecticut Warbler
Mourning Warbler
Kentucky Warbler
Hooded Warbler
Cape May Warbler
Cerulean Warbler
Northern Parula
Tropical Parula
Magnolia Warbler
Bay-breasted Warbler
Blackburnian Warbler
Chestnut-sided Warbler
Blackpoll Warbler
Black-throated Blue Warbler
Palm Warbler
Pine Warbler
Yellow-throated Warbler
Prairie Warbler
Grace's Warbler
Townsend's Warbler
*Townsend's x Black-throated Green Warbler
Hermit Warbler
Black-throated Green Warbler
Golden-crowned Warbler
Canada Warbler
Red-faced Warbler
Painted Redstart
Hepatic Tanager
Summer Tanager
Scarlet Tanager
Western Tanager
Northern Cardinal
Pyrrhuloxia
Yellow Grosbeak
Rose-breasted Grosbeak
Blue Grosbeak
Lazuli Bunting
Indigo Bunting
Varied Bunting
Painted Bunting
Dickcissel
Select a record to view comments and documentations
Acc. No.
Year
Location
County
Observers
2011-081
2011
Chatfield State Park
Douglas & Arapahoe
Glenn Walbek, David Alcock, Peter Gent, Bill Maynard, Brandon Percival, Nathan Pieplow
2012-028
2012
Prewitt Reservoir State Wildlife Area
Morgan
Steve Mlodinow
2012-038
2012
Prewitt Reservoir State Wildlife Area
Washington
Steve Mlodinow
2013-239
2013
Timnath Reservoir
Larimer
Steven Mlodinow
2014-171
2014
Big Johnson Reservoir
El Paso
John Drummond
2016-060
2016
Prewitt Reservoir State Wildlife Area
Washington
Steven Mlodinow
2016-054
2016
Blanca Wetlands
Alamosa
David Dowell, Sam Fason