Bat Monitoring

Assessing the health of bat populations across Marin.


The Peak Health Mt. Tam report issued by One Tam partners and Bay Area scientists identified a need to study Marin's bats. Seven of the thirteen types of bats residing in Marin may be special status species, yet little is known about them. So in 2016, One Tam, including Marin County Parks, joined with the U.S. Geological Survey to implement a three-year county-wide bat monitoring study.  

The project uses acoustic monitoring, roost surveys, and other techniques. Information collected by this project will determine the health of the County's bat populations, provide insights into bat behavior, inform wildlife conservation, and help scientists watch for white-nose syndrome, a deadly fungal disease that has not yet spread to this area. Repeating the survey in coming years will illuminate status and trends over time, and contribute to nationwide data about bats being collected by the North American Bat Monitoring program.