Colorado, US

State

39322 species observed across 8 groups · Pop. 5.8M

Ecoregions

Species observed

Increased Seasonal Activity

Currently Flowering

Birds· 913 species

Mammals· 357 species

Plants· 11730 species

Reptiles & Amphibians· 391 species

Fish· 354 species

Insects· 19734 species

Other Invertebrates· 1989 species

Fungi & Lichens· 3854 species

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Counties in Colorado

Adams County, COPop. 520.5KAlamosa County, COPop. 16.4KArapahoe County, COPop. 655.3KArchuleta County, COPop. 13.4KBaca County, COPop. 3.5KBent County, COPop. 5.5KBoulder County, COPop. 330.9KBroomfield County, COPop. 74.5KChaffee County, COPop. 19.5KCheyenne County, COPop. 1.7KClear Creek County, COPop. 9.4KConejos County, COPop. 7.5KCostilla County, COPop. 3.5KCrowley County, COPop. 5.7KCuster County, COPop. 4.7KDelta County, COPop. 31.1KDenver County, COPop. 717.6KDolores County, COPop. 2.3KDouglas County, COPop. 360.3KEagle County, COPop. 55.7KElbert County, COPop. 26.2KEl Paso County, COPop. 732.4KFremont County, COPop. 48.9KGarfield County, COPop. 61.8KGilpin County, COPop. 5.8KGrand County, COPop. 15.7KGunnison County, COPop. 16.9KHinsdale County, COPop. 788Huerfano County, COPop. 6.8KJackson County, COPop. 1.4KJefferson County, COPop. 583.1KKiowa County, COPop. 1.5KKit Carson County, COPop. 7.1KLake County, COPop. 7.4KLa Plata County, COPop. 55.7KLarimer County, COPop. 359.9KLas Animas County, COPop. 14.5KLincoln County, COPop. 5.7KLogan County, COPop. 21.2KMesa County, COPop. 156.0KMineral County, COPop. 874Moffat County, COPop. 13.3KMontezuma County, COPop. 25.9KMontrose County, COPop. 42.8KMorgan County, COPop. 29.1KOtero County, COPop. 18.7KOuray County, COPop. 4.9KPark County, COPop. 17.4KPhillips County, COPop. 4.5KPitkin County, COPop. 17.4KProwers County, COPop. 12.0KPueblo County, COPop. 168.3KRio Blanco County, COPop. 6.5KRio Grande County, COPop. 11.5KRoutt County, COPop. 24.8KSaguache County, COPop. 6.4KSan Juan County, COPop. 711San Miguel County, COPop. 8.1KSedgwick County, COPop. 2.4KSummit County, COPop. 31.0KTeller County, COPop. 24.7KWashington County, COPop. 4.8KWeld County, COPop. 331.5KYuma County, COPop. 10.0K