Gilpin County - 170 species

GEESE
  Canada Goose
DUCKS
  Gadwall
  American Wigeon
  Mallard
  Blue-winged Teal
  Cinnamon Teal
  Northern Shoveler
  Northern Pintail
  Green-winged Teal
  Redhead
  Ring-necked Duck
  Lesser Scaup
  Bufflehead
  Common Goldeneye
  Barrow's Goldeneye
  Common Merganser
  Ruddy Duck
GROUSE
  White-tailed Ptarmigan
  Dusky Grouse
GREBES
  Pied-billed Grebe
  Horned Grebe
  Eared Grebe
CORMORANTS
  Double-crested Cormorant
HERONS
  Great Blue Heron
  Black-crowned Night-Heron
VULTURES
  Turkey Vulture
HAWKS
  Osprey
  Bald Eagle
  Northern Harrier
  Sharp-shinned Hawk
  Cooper's Hawk
  Northern Goshawk
  Swainson's Hawk
  Red-tailed Hawk
  Rough-legged Hawk
  Golden Eagle
RAILS
  American Coot
PLOVERS
  Killdeer
SANDPIPERS
  Spotted Sandpiper
  Willet
  Wilson's Snipe
GULLS
  Franklin's Gull
  Ring-billed Gull
  California Gull
PIGEONS & DOVES
  Rock Pigeon
  Band-tailed Pigeon
  Mourning Dove
OWLS
  Flammulated Owl
  Great Horned Owl
  Northern Pygmy-Owl
  Long-eared Owl
  Boreal Owl
  Northern Saw-whet Owl
NIGHTJARS
  Common Nighthawk
  Common Poorwill
SWIFTS
  White-throated Swift
HUMMINGBIRDS
  Broad-tailed Hummingbird
  Rufous Hummingbird
  Calliope Hummingbird
KINGFISHERS
  Belted Kingfisher
WOODPECKERS
  Williamson's Sapsucker
  Red-naped Sapsucker
  Downy Woodpecker
  Hairy Woodpecker
  American Three-toed Woodpecker
  Northern Flicker
FALCONS
  American Kestrel
  Merlin
  Peregrine Falcon
  Prairie Falcon
FLYCATCHERS
  Olive-sided Flycatcher
  Western Wood-Pewee
  Willow Flycatcher
  Hammond's Flycatcher
  Dusky Flycatcher
  Cordilleran Flycatcher
  Say's Phoebe
  Vermilion Flycatcher
  Western Kingbird
SHRIKES
  Loggerhead Shrike
  Northern Shrike
VIREOS
  Plumbeous Vireo
  Warbling Vireo
JAYS & CROWS
  Gray Jay
  Pinyon Jay
  Steller's Jay
  Blue Jay
  Clark's Nutcracker
  Black-billed Magpie
  American Crow
  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
NUTHATCHES
  Red-breasted Nuthatch
  White-breasted Nuthatch
  Pygmy Nuthatch
CREEPERS
  Brown Creeper
WRENS
  Rock Wren
  House Wren
  Winter Wren
GNATCATCHERS
  Blue-gray Gnatcatcher
DIPPERS
  American Dipper
KINGLETS
  Golden-crowned Kinglet
  Ruby-crowned Kinglet
THRUSHES
  Western Bluebird
  Mountain Bluebird
  Townsend's Solitaire
  Swainson's Thrush
  Hermit Thrush
  American Robin
THRASHERS
  Sage Thrasher
  Brown Thrasher
STARLINGS
  European Starling
PIPITS
  American Pipit
WAXWINGS
  Bohemian Waxwing
  Cedar Waxwing
WARBLERS
  Northern Waterthrush
  Black-and-white Warbler
  Prothonotary Warbler
  Orange-crowned Warbler
  MacGillivray's Warbler
  Common Yellowthroat
  Yellow Warbler
  Yellow-rumped Warbler
  Townsend's Warbler
  Wilson's Warbler
SPARROWS
  Green-tailed Towhee
  Spotted Towhee
  American Tree Sparrow
  Chipping Sparrow
  Brewer's Sparrow
  Vesper Sparrow
  Lark Sparrow
  Lark Bunting
  Savannah Sparrow
  Fox Sparrow
  Song Sparrow
  Lincoln's Sparrow
  White-crowned Sparrow
  Dark-eyed Junco
CARDINALS
  Western Tanager
  Rose-breasted Grosbeak
  Black-headed Grosbeak
  Lazuli Bunting
  Indigo Bunting
BLACKBIRDS
  Red-winged Blackbird
  Western Meadowlark
  Brewer's Blackbird
  Common Grackle
  Brown-headed Cowbird
  Bullock's Oriole
FINCHES
  Gray-crowned Rosy-Finch
  Black Rosy-Finch
  Brown-capped Rosy-Finch
  Pine Grosbeak
  Cassin's Finch
  House Finch
  Red Crossbill
  Pine Siskin
  Lesser Goldfinch
  American Goldfinch
  Evening Grosbeak
OLD WORLD SPARROWS
  House Sparrow