Colorado Bat Working Group Logo Colorado Bat Working Group Logo CBWG
  • About CBWG
  • Bats of Colorado
  • Plan
  • Management and Conservation
  • CO Bat Matrix
    • Search CO Bat Matrix
    • CO Bat Species List
    • CO Bat Matrix Methods
    • CO Bat Matrix References
    • CO Bat Matrix Poster
  • Excluding bats
  • CNHP Home

Cave Access Management(grating)

California myotis (Myotis californicus)
Family:Vespertilionidae

Search CO Bat Matrix > California myotis (Myotis californicus) Threat Matrix

Species Profile

BatPicture.

Myotis californicus roosts primarily in rock crevices and caves across the western U.S. (Bogan et al. 2003).  Very little is known about this species roosting habits in CO.  In 2006, Chung-MacCoubrey (2008) tracked one individual to three rock crevice roosts in the Book Cliffs north of Mack, CO.  In CO, Siemers (2002) did not observe this species using caves suggesting that other structures, such as rock crevices or tree snags, may be used to a greater extent.  The species is also known to use mines in the state on occasion.  Impacts to this species from cave related disturbances are probably minimal in extent.  

ScopeSeverityImmediacy
InsignificantInsignificantInsignificant
Cave Access Management(grating) U
A = Substantial, imminent threat
B = Moderate and imminent threat
C = Substantial, non-imminent threat
D = Moderate, non-imminent threat
E = Localized substantial threat
F = Widespread, low-severity threat
G = Slightly threatened
U = Unknown

Colorado Bat Working Group

About CBWG
Bats of Colorado
CBWG Bat Conservation Plan
Bat Management and Conservation Information
Links

CO Bat Matrix

CO Bat Matrix
Search Matrix
CO Bat Species List
Methods
References

Web Projects

  • CODEX - Colorado’s Conservation Data Explorer
  • Rare Plant Guide Online
  • Colorado Wetland Info Center
  • COMaP - Colorado Protected Lands
  • Colorado Bat Working Group
  • STReaMS - Endangered Fishes Database
  • Colorado Native Plant Database Data Portal

About Us

  • About CBWG
  • Bats of Colorado
  • CO Bat Conservation Plan
  • Management and Conservation
  • CO Bat Matrix
  • Links
  • Site Map
Warner College of Natural Resources Logo
  • Apply to CSU
  • Equal Opportunity
  • Disclaimer
  • Privacy Statement
  • Search CSU
  • CSU Land Acknowledgement
  • CSU Principles of Community
© 2026 Colorado Natural Heritage Program
Colorado State University Logo
  • About CBWG
  • Bats of Colorado
  • Plan
  • Management and Conservation
  • CO Bat Matrix
    ▼
    • Search CO Bat Matrix
    • CO Bat Species List
    • CO Bat Matrix Methods
    • CO Bat Matrix References
    • CO Bat Matrix Poster
  • Excluding bats
  • CNHP Home