• Little brown bat- Myotis lucifugus
• Yuma myotis – Myotis yumanensis
• Long-eared myotis – Myotis evotis
• Fringed myotis – Myotis thysanodes
• Long-legged myotis – Myotis volans
• California myotis – Myotis Californicus
• Small-footed myotis – Myotis ciliolabrum
Silver-haired bat – Lasionycteris noctvagans
• Western pipistrelle – Pipistrellus hesperus
• Eastern pipistrelle – Pipitrellus subflavus
• Big brown bat – Eptesicus fuscus
Hoary bat – Lasuurus cinereus
Red bat – Lasiurus borealis
• Townsend's big-eared bat – Plecotus townsendii
Spotted bat – Euderma maculatum
Pallid bat – Antozous pallidus
• Brazilian or mexican free-tailed bat – Tadarida brasiliensis
Big free-tailed bat – Nyctinomops nacrotis
• Indicates bats utilizing mines to some degree. (See DOW Working For Wildlife: The Bats/Inactive Mines Project.) 
(Editor's note: See Bats of Colorado for more about these bats.)
Who's Living in Your Bat House?
You can help conserve these remarkable and vulnerable animals by joining Bat Conservation International's (BCI) North American Bat House Research Project. By sharing information on the bats using your bat house you can make an important contribution to our understanding of the needs of bats while sharing in the excitement of scientific discovery. Contact BCI to join.
Next: DOW Working For Wildlife: The Bats/Inactive Mines Project
(The information contained in this issue of Colorado's Wildlife Company was accurate at the time of original publication. Situations and circumstances described, staff positions, contact information, and dates of some events may have changed in the interim. Present knowledge and understanding of biological and behavioral facts and information may also be different, now, than presented here.)