Based on 1,362 research-grade iNaturalist observations in Colorado, Muskrat is most often recorded in April; in Colorado it behaves like a seasonal. It ranks #18 among mammals recorded in the state in our data.
Ondatra zibethicus
Muskrat 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 April
Mule Deer
Eastern Fox Squirrel
Black-tailed Prairie Dog
Wapiti
Pronghorn
Bighorn Sheep
American Beaver
Red Fox
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 Muskrat appear in Colorado?
Mainly March–August, with the most records in April.
How common is Muskrat in Colorado?
It ranks #18 by number of iNaturalist observations among mammals in Colorado (1,362 records in our sample).