Based on 2,683 research-grade iNaturalist observations in Wyoming, Yellow-bellied Marmot is most often recorded in July; in Wyoming it behaves like a summer visitor / breeder. It ranks #7 among mammals recorded in the state in our data.
Marmota flaviventris
Yellow-bellied Marmot in Wyoming 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 Wyoming in July
American Bison
Wapiti
Pronghorn
Moose
Uinta Ground Squirrel
American Black Bear
Mule Deer
Common Golden-mantled Ground Squirrel
Places to look in Wyoming
National ForestShoshone National Forest
National ForestBridger–Teton National Forest
State ParkFort Bridger
State ParkHot Springs State Park
State ParkFort Fred Steele State Historic Site
National Wildlife RefugeNational Elk Refuge
FAQ
When does Yellow-bellied Marmot appear in Wyoming?
Mainly May–August, with the most records in July.
How common is Yellow-bellied Marmot in Wyoming?
It ranks #7 by number of iNaturalist observations among mammals in Wyoming (2,683 records in our sample).