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Wildlife of Boulder County

Boulder County is comprised of 740 square miles of land nestled along the front range of Colorado just 30 miles northwest of Denver. Its proximity to the mountains, diverse landscapes, and various designated open spaces make the county ideal for observing local and even migrating wildlife. ...more ↓

House Wren 1
Troglodytes aedon
Marsh Wren 2
Cistothorus palustris
American Dipper 3
Cinclus mexicanus
Western Scrub-Jay 4
Aphelocoma californica
Chihuahuan Raven 5
Corvus cryptoleucus
Common Raven 6
Corvus corax
American Crow 7
Corvus brachyrhynchos
Blue Jay 8
Cyanocitta cristata
Steller's Jay 9
Cyanocitta stelleri
Gray Jay 10
Perisoreus canadensis
Clark's Nutcracker 11
Nucifraga columbiana
Pinyon Jay 12
Gymnorhinus cyanocephalus
Lincoln's Sparrow 13
Melospiza lincolnii
Swamp Sparrow 14
Melospiza georgiana
Song Sparrow 15
Melospiza melodia
Chipping Sparrow 16
Spizella passerina
Brewer's Sparrow 17
Spizella breweri
Clay-colored Sparrow 1
Spizella pallida
Fox Sparrow 18
Passerella iliaca
White-crowned Sparrow 19
Zonotrichia leucophrys
Harris's Sparrow 20
Zonotrichia querula
White-throated Sparrow 21
Zonotrichia albicollis
Golden-crowned Sparrow 22
Zonotrichia atricapilla
Orchard Oriole 23
Icterus spurius
Baltimore Oriole 24
Icterus galbula
Bullock's Oriole 1
Icterus bullockii
Green-tailed Towhee 1
Pipilo chlorurus
Spotted Towhee 25
Pipilo maculatus
Western Meadowlark 3
Sturnella neglecta
Common Grackle 26
Quiscalus quiscula
Great-tailed Grackle 27
Quiscalus mexicanus
Black Rosy-Finch 1
Leucosticte atrata
Brown-capped Rosy-Finch 1
Leucosticte australis
Gray-crowned Rosy-Finch 28
Leucosticte tephrocotis
Common Yellowthroat 29
Geothlypis trichas
Red-winged Blackbird 30
Agelaius phoeniceus
Pine Grosbeak 31
Pinicola enucleator
Evening Grosbeak 32
Coccothraustes vespertinus
Western Tanager 1
Piranga ludoviciana
Savannah Sparrow
Passerculus sandwichensis
Dark-eyed Junco 15
Junco hyemalis
Vesper Sparrow 1
Pooecetes gramineus
Lazuli Bunting 33
Passerina amoena
Yellow-breasted Chat 33
Icteria virens
American Redstart 34
Setophaga ruticilla
Rose-breasted Grosbeak 35
Pheucticus ludovicianus
Black-headed Grosbeak 3
Pheucticus melanocephalus
Black-and-white Warbler 36
Mniotilta varia
Brewer's Blackbird 37
Euphagus cyanocephalus
Brown-headed Cowbird 1
Molothrus ater
Red Crossbill 38
Loxia curvirostra
White-winged Crossbill 39
Loxia leucoptera
Yellow-headed Blackbird 40
Xanthocephalus xanthocephalus
Lark Sparrow 28
Chondestes grammacus
Bobolink 41
Dolichonyx oryzivorus
Lark Bunting 1
Calamospiza melanocorys
Dickcissel 1
Spiza americana
Cliff Swallow 42
Petrochelidon pyrrhonota
Purple Martin 43
Progne subis
Barn Swallow 44
Hirundo rustica
Violet-green Swallow 45
Tachycineta thalassina
Tree Swallow 2
Tachycineta bicolor
Bank Swallow 46
Riparia riparia
Northern Rough-winged Swallow 1
Stelgidopteryx serripennis
Northern Shrike 47
Lanius excubitor
Loggerhead Shrike 3
Lanius ludovicianus
American Robin 48
Turdus migratorius
Swainson's Thrush 49
Catharus ustulatus
Hermit Thrush 37
Catharus guttatus
Veery 50
Catharus fuscescens
Mountain Bluebird 28
Sialia currucoides
Western Bluebird 37
Sialia mexicana
Townsend's Solitaire 51
Myadestes townsendi
American Pipit 1
Anthus rubescens
House Sparrow 52
Passer domesticus
White-breasted Nuthatch 21
Sitta carolinensis
Pygmy Nuthatch 53
Sitta pygmaea
Red-breasted Nuthatch 54
Sitta canadensis
European Starling 55
Sturnus vulgaris
Northern Mockingbird 41
Mimus polyglottos
Brown Thrasher 56
Toxostoma rufum
Gray Catbird 1
Dumetella carolinensis
Sage Thrasher 57
Oreoscoptes montanus
Western Wood-Pewee 58
Contopus sordidulus
Olive-sided Flycatcher 59
Contopus cooperi
Least Flycatcher 14
Empidonax minimus
Willow Flycatcher 41
Empidonax traillii
Dusky Flycatcher 1
Empidonax oberholseri
Hammond's Flycatcher 60
Empidonax hammondii
Cordilleran Flycatcher 1
Empidonax occidentalis
Eastern Kingbird 61
Tyrannus tyrannus
Western Kingbird 33
Tyrannus verticalis
Say's Phoebe 41
Sayornis saya
Plumbeous Vireo 1
Vireo plumbeus
Red-eyed Vireo 21
Vireo olivaceus
Cassin's Vireo 1
Vireo cassinii
Warbling Vireo 62
Vireo gilvus
Blue-headed Vireo 13
Vireo solitarius
American Three-toed Woodpecker 63
Picoides dorsalis
Downy Woodpecker 64
Picoides pubescens

Edited by srupinsky, Melanie Hill, Deborah H Price, and Dave Sutherland, some rights reserved (CC BY-SA)

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