Species Threat Matrix
Big free-tailed bat (Nyctinomops macrotis)
Family:Molossidae

Search CO Bat Matrix > Big free-tailed bat (Nyctinomops macrotis) Threat Matrix

Species Profile
BatPicture.

The big free- tailed bat occurs mainly in southern California, Arizona, New Mexico, Texas and Mexico. Long thought to be an accidental wanderer in Colorado, recent data show the presence of breeding colonies in Colorado. Indeed, audible echolocation calls and recordings provide evidence of widespread occurrence across Colorado.

Cave Management

Cave Access Management(grating) U
Surface Disturbances U
Internal Disturbances U

Crevice and Cavity Management

Disturbances G

Energy Development

Oil and Gas Development F
Wind Development (indirect effects) G
Wind Development (direct effects) G

Forest Management

Insect, Disease and Large-Scale Disturbances G
Timber Harvest/Forest Products U
Fuels Treatments U

Mining

Renewed Uranium Mining U
AML Closure Programs U

Rangeland Management

Grazing U
Fire Management U
Invasive Plant and Pest Management U

Urban

Loss of Human-made Roosts (Buildings and Bridges) U
Extermination of Bats U
Urbanization U
Contaminants U
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