Why were yellow-bellied marmots found in the Bay Area?
Two yellow-bellied marmots were discovered in the San Francisco Bay Area this September, likely after hitching rides in the undercarriages of vehicles traveling from mountain regions. One animal was found in San Francisco’s Mission District, while a second was located in Antioch. These alpine rodents are known to climb into vehicles to seek electrolytes in radiator fluid, often falling asleep and waking up in urban environments far from their high-mountain homes.
The rescue organization Yggdrasil Urban Wildlife Rescue safely captured both animals, which were found to be physically unharmed but disoriented. Staff are currently working to determine the specific origins of the marmots to ensure they are released back into appropriate habitats. If their home range cannot be identified, the animals may be transferred to the Tahoe Wildlife Center for further care and eventual release.
How can drivers prevent marmots from hitching a ride?
The National Park Service advises motorists to inspect their vehicle undercarriages and engine compartments before and after traveling through mountain regions. Because marmots are attracted to the electrolytes in antifreeze and may chew on radiator hoses and electrical wiring, drivers should perform a thorough visual inspection of the engine bay and wheel wells before departing to ensure no animals are present.
