Denver County - 240 species

Note: Many records for Denver County are based on historical specimens. As little native habitats are currently present within the county, many of these records may not be duplicated.

GEESE
  Greater White-fronted Goose
  Snow Goose
  Ross's Goose
  Cackling Goose
  Canada Goose
SWANS
  Tundra Swan
DUCKS
  Wood Duck
  Gadwall
  American Wigeon
  Mallard
  Blue-winged Teal
  Cinnamon Teal
  Northern Shoveler
  Northern Pintail
  Green-winged Teal
  Canvasback
  Redhead
  Ring-necked Duck
  Greater Scaup
  Lesser Scaup
  Surf Scoter
  White-winged Scoter
  Black Scoter
  Long-tailed Duck
  Bufflehead
  Common Goldeneye
  Barrow's Goldeneye
  Hooded Merganser
  Common Merganser
  Red-breasted Merganser
  Ruddy Duck
LOONS
  Red-throated Loon
  Pacific Loon
  Common Loon
GREBES
  Pied-billed Grebe
  Horned Grebe
  Eared Grebe
  Western Grebe
  Clark's Grebe
STORKS
  Wood Stork
CORMORANTS
  Double-crested Cormorant
PELICANS
  American White Pelican
HERONS
  Great Blue Heron
  Snowy Egret
  Black-crowned Night-Heron
IBISES
  White-faced Ibis
VULTURES
  Turkey Vulture
HAWKS
  Osprey
  Bald Eagle
  Northern Harrier
  Sharp-shinned Hawk
  Cooper's Hawk
  Broad-winged Hawk
  Swainson's Hawk
  Red-tailed Hawk
  Ferruginous Hawk
  Rough-legged Hawk
  Golden Eagle
RAILS
  Virginia Rail
  American Coot
CRANES
  Sandhill Crane
PLOVERS
  Black-bellied Plover
  Semipalmated Plover
  Killdeer
AVOCETS & STILTS
  American Avocet
SANDPIPERS
  Spotted Sandpiper
  Solitary Sandpiper
  Greater Yellowlegs
  Willet
  Lesser Yellowlegs
  Eskimo Curlew
  Long-billed Curlew
  Marbled Godwit
  Ruddy Turnstone
  Sanderling
  Semipalmated Sandpiper
  Western Sandpiper
  Least Sandpiper
  Baird's Sandpiper
  Long-billed Dowitcher
  Wilson's Snipe
  American Woodcock
  Wilson's Phalarope
  Red-necked Phalarope
GULLS
  Bonaparte's Gull
  Laughing Gull
  Franklin's Gull
  Mew Gull
  Ring-billed Gull
  California Gull
  Herring Gull
  Thayer's Gull
  Glaucous Gull
TERNS
  Black Tern
  Common Tern
  Forster's Tern
PIGEONS & DOVES
  Rock Pigeon
  Eurasian Collared-Dove
  White-winged Dove
  Mourning Dove
CUCKOOS
  Black-billed Cuckoo
  Greater Roadrunner
BARN OWLS
  Barn Owl
OWLS
  Eastern Screech-Owl
  Great Horned Owl
  Northern Pygmy-Owl
  Burrowing Owl
NIGHTJARS
  Common Nighthawk
SWIFTS
  Black Swift
  Chimney Swift
HUMMINGBIRDS
  Black-chinned Hummingbird
  Broad-tailed Hummingbird
  Rufous Hummingbird
KINGFISHERS
  Belted Kingfisher
WOODPECKERS
  Williamson's Sapsucker
  Downy Woodpecker
  Hairy Woodpecker
  Northern Flicker
FALCONS
  American Kestrel
  Merlin
  Peregrine Falcon
  Prairie Falcon
FLYCATCHERS
  Olive-sided Flycatcher
  Western Wood-Pewee
  Alder Flycatcher
  Least Flycatcher
  Hammond's Flycatcher
  Gray Flycatcher
  Dusky Flycatcher
  Say's Phoebe
  Western Kingbird
  Eastern Kingbird
  Scissor-tailed Flycatcher
SHRIKES
  Loggerhead Shrike
  Northern Shrike
VIREOS
  Bell's Vireo
  Cassin's Vireo
  Warbling Vireo
  Red-eyed Vireo
JAYS & CROWS
  Pinyon Jay
  Steller's Jay
  Blue Jay
  Western Scrub-Jay
  Clark's Nutcracker
  Black-billed Magpie
  American Crow
  Chihuahuan Raven
  Common Raven
LARKS
  Horned Lark
SWALLOWS
  Tree Swallow
  Violet-green Swallow
  Northern Rough-winged Swallow
  Bank Swallow
  Cliff Swallow
  Barn Swallow
CHICKADEES
  Black-capped Chickadee
  Mountain Chickadee
BUSHTITS
  Bushtit
NUTHATCHES
  Red-breasted Nuthatch
  White-breasted Nuthatch
CREEPERS
  Brown Creeper
WRENS
  Rock Wren
  House Wren
  Winter Wren
  Carolina Wren
GNATCATCHERS
  Blue-gray Gnatcatcher
KINGLETS
  Golden-crowned Kinglet
  Ruby-crowned Kinglet
THRUSHES
  Eastern Bluebird
  Mountain Bluebird
  Townsend's Solitaire
  Hermit Thrush
  Wood Thrush
  American Robin
  Varied Thrush
THRASHERS
  Gray Catbird
  Long-billed Thrasher
STARLINGS
  European Starling
PIPITS
  American Pipit
WAXWINGS
  Bohemian Waxwing
  Cedar Waxwing
WARBLERS
  Ovenbird
  Northern Waterthrush
  Orange-crowned Warbler
  Virginia's Warbler
  Mourning Warbler
  Common Yellowthroat
  Cape May Warbler
  Magnolia Warbler
  Yellow Warbler
  Chestnut-sided Warbler
  Blackpoll Warbler
  Black-throated Blue Warbler
  Palm Warbler
  Pine Warbler
  Yellow-rumped Warbler
  Yellow-throated Warbler
  Townsend's Warbler
  Wilson's Warbler
  Yellow-breasted Chat
SPARROWS
  Green-tailed Towhee
  Spotted Towhee
  American Tree Sparrow
  Chipping Sparrow
  Clay-colored Sparrow
  Brewer's Sparrow
  Vesper Sparrow
  Lark Sparrow
  Black-throated Sparrow
  Lark Bunting
  Savannah Sparrow
  Song Sparrow
  Lincoln's Sparrow
  Harris's Sparrow
  White-crowned Sparrow
  Dark-eyed Junco
CARDINALS
  Summer Tanager
  Scarlet Tanager
  Western Tanager
  Black-headed Grosbeak
  Blue Grosbeak
  Lazuli Bunting
BLACKBIRDS
  Bobolink
  Red-winged Blackbird
  Western Meadowlark
  Yellow-headed Blackbird
  Rusty Blackbird
  Brewer's Blackbird
  Common Grackle
  Great-tailed Grackle
  Brown-headed Cowbird
  Orchard Oriole
  Bullock's Oriole
FINCHES
  Purple Finch
  House Finch
  Pine Siskin
  Lesser Goldfinch
  American Goldfinch
  Evening Grosbeak
OLD WORLD SPARROWS
  House Sparrow