
Based on 2,809 research-grade iNaturalist observations in Colorado, Pronghorn is most often recorded in June; in Colorado it behaves like a summer visitor / breeder. It ranks #11 among mammals recorded in the state in our data.
Antilocapra americana
Pronghorn in Colorado by month
Bars show research-grade observations per month. They mix true seasonality with how often people are outdoors, so treat small numbers with caution.
Also seen in Colorado in June

Mule Deer

Yellow-bellied Marmot
Common Golden-mantled Ground Squirrel

Wapiti
Moose

Black-tailed Prairie Dog

Bighorn Sheep

Eastern Fox Squirrel
Places to look in Colorado
White River National Forest
Denver Botanic Gardens
Rio Grande National Forest
National ForestSan Juan National Forest
Roxborough State Park
Mancos State Park
FAQ
When does Pronghorn appear in Colorado?
Mainly April–October, with the most records in June.
How common is Pronghorn in Colorado?
It ranks #11 by number of iNaturalist observations among mammals in Colorado (2,809 records in our sample).