Ground squirrels at this park have long been a problem for the city, which has been cited by the county for overpopulation and has tried a number of suppression methods.

That fearsome enemy is a species of rodent known as Richardson’s ground squirrel. The squirrels, each about a foot long and 1-2 pounds, ... The squirrels clawed right through the steel fabric.

Hibernating Arctic ground squirrels ‘recycle body’s own nutrients’ to survive long cold winters. Breakdown of muscle during long stretch of inactivity releases nitrogen, which is used in ...

The observations occurred in 2024 — the 12th year of the Long-term Behavioral Ecology of California Ground Squirrels Project conducted at Briones Regional Park in Contra Costa County. Out of 74 ...