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 ↓

Horned Lark ¹
Eremophila alpestris

Cedar Waxwing ²
Bombycilla cedrorum

Bohemian Waxwing ³
Bombycilla garrulus

Brown Creeper ⁴
Certhia americana

Canyon Wren ⁵
Catherpes mexicanus

Rock Wren ⁶
Salpinctes obsoletus

Blue-gray Gnatcatcher ⁶
Polioptila caerulea

House Wren ⁶
Troglodytes aedon

Marsh Wren ³
Cistothorus palustris

American Dipper ⁷
Cinclus mexicanus

Western Scrub-Jay ⁸
Aphelocoma californica

Chihuahuan Raven ⁹
Corvus cryptoleucus

Common Raven ¹⁰
Corvus corax

American Crow ¹¹
Corvus brachyrhynchos

Blue Jay ¹²
Cyanocitta cristata

Steller's Jay ¹³
Cyanocitta stelleri

Gray Jay ¹⁴
Perisoreus canadensis

Clark's Nutcracker ¹⁵
Nucifraga columbiana

Pinyon Jay ¹⁶
Gymnorhinus cyanocephalus

Lincoln's Sparrow ¹⁷
Melospiza lincolnii

Swamp Sparrow ¹⁸
Melospiza georgiana

Song Sparrow ¹⁹
Melospiza melodia

Chipping Sparrow ²⁰
Spizella passerina

Brewer's Sparrow ⁵
Spizella breweri

Clay-colored Sparrow ⁶
Spizella pallida

Fox Sparrow ²¹
Passerella iliaca

White-crowned Sparrow ²²
Zonotrichia leucophrys

Harris's Sparrow ²³
Zonotrichia querula

White-throated Sparrow ²⁴
Zonotrichia albicollis

Golden-crowned Sparrow ²⁵
Zonotrichia atricapilla

Orchard Oriole ²⁶
Icterus spurius

Baltimore Oriole ²⁷
Icterus galbula

Bullock's Oriole ⁶
Icterus bullockii

Green-tailed Towhee ⁶
Pipilo chlorurus

Spotted Towhee ²⁸
Pipilo maculatus

Western Meadowlark ⁷
Sturnella neglecta

Common Grackle ²⁹
Quiscalus quiscula

Great-tailed Grackle ³⁰
Quiscalus mexicanus

Black Rosy-Finch ⁶
Leucosticte atrata

Brown-capped Rosy-Finch ⁶
Leucosticte australis

Gray-crowned Rosy-Finch ³¹
Leucosticte tephrocotis

Common Yellowthroat ³²
Geothlypis trichas

Red-winged Blackbird ³³
Agelaius phoeniceus

Pine Grosbeak ³⁴
Pinicola enucleator

Evening Grosbeak ³⁵
Coccothraustes vespertinus

Western Tanager ⁶
Piranga ludoviciana

Savannah Sparrow
Passerculus sandwichensis

Dark-eyed Junco ¹⁹
Junco hyemalis

Vesper Sparrow ⁶
Pooecetes gramineus

Lazuli Bunting ³⁶
Passerina amoena

Yellow-breasted Chat ³⁶
Icteria virens

American Redstart ³⁷
Setophaga ruticilla

Rose-breasted Grosbeak ³⁸
Pheucticus ludovicianus

Black-headed Grosbeak ⁷
Pheucticus melanocephalus

Black-and-white Warbler ³⁹
Mniotilta varia

Brewer's Blackbird ⁴⁰
Euphagus cyanocephalus

Brown-headed Cowbird ⁶
Molothrus ater

Red Crossbill ⁴¹
Loxia curvirostra

White-winged Crossbill ⁴²
Loxia leucoptera

Yellow-headed Blackbird ⁴³
Xanthocephalus xanthocephalus

Lark Sparrow ³¹
Chondestes grammacus

Bobolink ⁴⁴
Dolichonyx oryzivorus

Lark Bunting ⁶
Calamospiza melanocorys

Dickcissel ⁶
Spiza americana

Cliff Swallow ⁴⁵
Petrochelidon pyrrhonota

Purple Martin ⁴⁶
Progne subis

Barn Swallow ⁴⁷
Hirundo rustica

Violet-green Swallow ⁴⁸
Tachycineta thalassina

Tree Swallow ³
Tachycineta bicolor

Bank Swallow ⁴⁹
Riparia riparia

Northern Rough-winged Swallow ⁶
Stelgidopteryx serripennis

Northern Shrike ⁵⁰
Lanius excubitor

Loggerhead Shrike ⁷
Lanius ludovicianus

American Robin ⁵¹
Turdus migratorius

Swainson's Thrush ⁵²
Catharus ustulatus

Hermit Thrush ⁴⁰
Catharus guttatus

Veery ⁵³
Catharus fuscescens

Mountain Bluebird ³¹
Sialia currucoides

Western Bluebird ⁴⁰
Sialia mexicana

Townsend's Solitaire ⁵⁴
Myadestes townsendi

American Pipit ⁶
Anthus rubescens

House Sparrow ⁵⁵
Passer domesticus

White-breasted Nuthatch ²⁴
Sitta carolinensis

Pygmy Nuthatch ⁵⁶
Sitta pygmaea

Red-breasted Nuthatch ⁵⁷
Sitta canadensis

European Starling ⁵⁸
Sturnus vulgaris

Northern Mockingbird ⁴⁴
Mimus polyglottos

Brown Thrasher ⁵⁹
Toxostoma rufum

Gray Catbird ⁶
Dumetella carolinensis

Sage Thrasher ⁶⁰
Oreoscoptes montanus

Western Wood-Pewee ⁶¹
Contopus sordidulus

Olive-sided Flycatcher ⁶²
Contopus cooperi

Least Flycatcher ¹⁸
Empidonax minimus

Willow Flycatcher ⁴⁴
Empidonax traillii

Dusky Flycatcher ⁶
Empidonax oberholseri

Hammond's Flycatcher ⁶³
Empidonax hammondii

Cordilleran Flycatcher ⁶
Empidonax occidentalis

Eastern Kingbird ⁶⁴
Tyrannus tyrannus

Western Kingbird ³⁶
Tyrannus verticalis

Say's Phoebe ⁴⁴
Sayornis saya

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

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Wildlife of Boulder County

Horned Lark 1 Eremophila alpestris

Cedar Waxwing 2 Bombycilla cedrorum

Bohemian Waxwing 3 Bombycilla garrulus

Brown Creeper 4 Certhia americana

Canyon Wren 5 Catherpes mexicanus

Rock Wren 6 Salpinctes obsoletus

Blue-gray Gnatcatcher 6 Polioptila caerulea

House Wren 6 Troglodytes aedon

Marsh Wren 3 Cistothorus palustris

American Dipper 7 Cinclus mexicanus

Western Scrub-Jay 8 Aphelocoma californica

Chihuahuan Raven 9 Corvus cryptoleucus

Common Raven 10 Corvus corax

American Crow 11 Corvus brachyrhynchos

Blue Jay 12 Cyanocitta cristata

Steller's Jay 13 Cyanocitta stelleri

Gray Jay 14 Perisoreus canadensis

Clark's Nutcracker 15 Nucifraga columbiana

Pinyon Jay 16 Gymnorhinus cyanocephalus

Lincoln's Sparrow 17 Melospiza lincolnii

Swamp Sparrow 18 Melospiza georgiana

Song Sparrow 19 Melospiza melodia

Chipping Sparrow 20 Spizella passerina

Brewer's Sparrow 5 Spizella breweri

Clay-colored Sparrow 6 Spizella pallida

Fox Sparrow 21 Passerella iliaca

White-crowned Sparrow 22 Zonotrichia leucophrys

Harris's Sparrow 23 Zonotrichia querula

White-throated Sparrow 24 Zonotrichia albicollis

Golden-crowned Sparrow 25 Zonotrichia atricapilla

Orchard Oriole 26 Icterus spurius

Baltimore Oriole 27 Icterus galbula

Bullock's Oriole 6 Icterus bullockii

Green-tailed Towhee 6 Pipilo chlorurus

Spotted Towhee 28 Pipilo maculatus

Western Meadowlark 7 Sturnella neglecta

Common Grackle 29 Quiscalus quiscula

Great-tailed Grackle 30 Quiscalus mexicanus

Black Rosy-Finch 6 Leucosticte atrata

Brown-capped Rosy-Finch 6 Leucosticte australis

Gray-crowned Rosy-Finch 31 Leucosticte tephrocotis

Common Yellowthroat 32 Geothlypis trichas

Red-winged Blackbird 33 Agelaius phoeniceus

Pine Grosbeak 34 Pinicola enucleator

Evening Grosbeak 35 Coccothraustes vespertinus

Western Tanager 6 Piranga ludoviciana

Savannah Sparrow Passerculus sandwichensis

Dark-eyed Junco 19 Junco hyemalis

Vesper Sparrow 6 Pooecetes gramineus

Lazuli Bunting 36 Passerina amoena

Yellow-breasted Chat 36 Icteria virens

American Redstart 37 Setophaga ruticilla

Rose-breasted Grosbeak 38 Pheucticus ludovicianus

Black-headed Grosbeak 7 Pheucticus melanocephalus

Black-and-white Warbler 39 Mniotilta varia

Brewer's Blackbird 40 Euphagus cyanocephalus

Brown-headed Cowbird 6 Molothrus ater

Red Crossbill 41 Loxia curvirostra

White-winged Crossbill 42 Loxia leucoptera

Yellow-headed Blackbird 43 Xanthocephalus xanthocephalus

Lark Sparrow 31 Chondestes grammacus

Bobolink 44 Dolichonyx oryzivorus

Lark Bunting 6 Calamospiza melanocorys

Dickcissel 6 Spiza americana

Cliff Swallow 45 Petrochelidon pyrrhonota

Purple Martin 46 Progne subis

Barn Swallow 47 Hirundo rustica

Violet-green Swallow 48 Tachycineta thalassina

Tree Swallow 3 Tachycineta bicolor

Bank Swallow 49 Riparia riparia

Northern Rough-winged Swallow 6 Stelgidopteryx serripennis

Northern Shrike 50 Lanius excubitor

Loggerhead Shrike 7 Lanius ludovicianus

American Robin 51 Turdus migratorius

Swainson's Thrush 52 Catharus ustulatus

Hermit Thrush 40 Catharus guttatus

Veery 53 Catharus fuscescens

Mountain Bluebird 31 Sialia currucoides

Western Bluebird 40 Sialia mexicana