Countywide, according to a joint study organized by Caltrans and the California Highway Patrol, there are about 4,000 motor vehicle accidents reported each year involving wildlife and livestock. Statewide, an estimated 20,000 wild animals are killed by cars and trucks annually, and the Bay Area‘s roads are the deadliest.

https://www.sonomanews.com/news/10127642-181/sonoma-valley-a-hotspot-for?view=AMP