Yellow-bellied Marmot

Yellow-bellied Marmots are plump mammals with grizzled brownish fur, a yellow belly, and whitish spot between eyes. A common mammal of urban areas and high-altitude mountains.
SCIENTIFIC NAME
Marmota flaviventris
CLASSIFICATION
Mammal
LIFE SPAN
10-15 Years
SIZE
18-28” | 3-10lbs
STATE CONSERVATION STATUS
  • Unprotected
FEDERAL CONSERVATION STATUS
Least Concern
GAME STATUS
Non-Game
GAME TYPE
None
  1. Washoe
  2. Humboldt
  3. Pershing
  4. Churchill
  5. Mineral
  6. Lyon
  7. Douglas
  8. Carson City
  9. Storey
  1. Elko
  2. Lander
  3. Eureka
  4. White Pine
  1. Esmeralda
  2. Nye
  3. Lincoln
  4. Clark

Habitat & Range

Yellow-bellied Marmots are distributed widely in the western United States and Canada. They range as far north as southcentral British Columbia and Alberta in Canada and as far south as the Sierra Nevada.

  • Alpine forests of the Sierras
  • Grasslands
  • Upland Forests

Threats

  • Habitat Degradation
  • Predation

Natural History

Most Yellow-bellied Marmots mate during May and June. The gestation period is for about 30 days, 3 to 8 pups in a litter. The young start to leave their nest at about 3 weeks of age and are weaned by 5 weeks old. The adult male will drive out his male offspring when they wake from hibernation. They’ll spend more than half of the year in hibernation, which can last from September to May depending on their home elevation.

These large rodents eat a large range of plant types, including grasses, flowers, and forbs. In late summer, large numbers of seeds are eaten. Food might be limited in areas where snow cover remains into the spring. They are selective feeders and are known to reject parts of plants that are toxic.

Fun Facts

The Yellow-bellied Marmot is nicknamed the “whistle pig” for the high-pitched chirp they make to warn other group members about potential threats. Although yellow-bellied marmots do not see well, they have an excellent sense of hearing and smell.