Cooperative Research Units
Education, Research And Technical Assistance For Managing Our Natural Resources
Home | Intranet | Digital Measures | Help

Townsend's Big-Eared Bat Statewide Assessment

Townsend's big-eared bat researchers in the field.


May 2015 - December 2017


The goal of this project is to quantify the current status of the Townsend's big-eared bat (Corynorhinus townsendii, COTO) in California. This task will provide the first state-wide assessment of the number and status of COTO colonies in California in more than two decades. It will provide a comprehensive report on the distribution, abundance, and condition of historic and currently occupied sites, a regional assessment of the species' status, and recommendations for maintaining or enhancing existing populations, as well as a discussion of likely future threats. Ancillary benefits of this study will be information on other bat species found in association with COTO, and additional public education on the status and value of bats through our contacts during surveys.


Current Staff

Federal Staff: 95

Masters Students: 238

Phd Students: 144

Post Docs: 54

University Staff: 239

5 Year Summary

Students graduated: 673

Scientific Publications: 1905

Presentations: 4236



  • Margaret WilzbachCo-Principal Investigator

Funding Agencies

  • California Department of Fish and Wildlife


Cooperative Research Units Program Headquarters Cooperators

  1. U.S. Geological Survey