Based on 15,643 research-grade iNaturalist observations in Colorado, Mule Deer is most often recorded in July; in Colorado it behaves like a seasonal. It ranks #1 among mammals recorded in the state in our data.
Odocoileus hemionus
Mule Deer 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 July
Common Golden-mantled Ground Squirrel
Yellow-bellied Marmot
Moose
Wapiti
American Pika
Black-tailed Prairie Dog
Bighorn Sheep
Mountain Goat
Places to look in Colorado
National ForestWhite River National Forest
Botanical GardenDenver Botanic Gardens
National ForestRio Grande National Forest
National ForestSan Juan National Forest
State ParkRoxborough State Park
State ParkMancos State Park
FAQ
When does Mule Deer appear in Colorado?
Mainly March–November, with the most records in July.
How common is Mule Deer in Colorado?
It ranks #1 by number of iNaturalist observations among mammals in Colorado (15,643 records in our sample).