Big Brown Bat
Eptesicus fuscus
One of Wyoming's most common building-dwelling bats. Regularly found in attics, soffits, and outbuildings statewide.
Bat Species in Wyoming
Wyoming is home to 14 documented bat species. Below is a quick visual reference. If you have bats roosting in your home, attic, soffit, or outbuilding, Wyoming Wildlife Specialists handles humane removal and exclusion across all of Wyoming.
Little Brown Bat
Myotis lucifugus
Wyoming's other most common building bat. Forms large maternity colonies in attics. Highly adaptable to human structures.
Hoary Bat
Lasiurus cinereus
Solitary and migratory. Roosts in tree foliage. Wyoming's largest bat. Rarely found in buildings.
Silver-haired Bat
Lasionycteris noctivagans
Tree-roosting and migratory. Occasionally enters buildings during migration through Wyoming.
Pallid Bat
Antrozous pallidus
Found in drier southern Wyoming. Roosts in rock crevices, caves, and buildings. Pale coloring is distinctive.
Townsend's Big-eared Bat
Corynorhinus townsendii
Long ears are immediately recognizable. Cave and mine dependent. A species of concern in Wyoming.
Western Small-footed Myotis
Myotis ciliolabrum
Wyoming's smallest myotis. Found in canyon country. Roosts in rock crevices and occasionally in buildings.
Long-legged Myotis
Myotis volans
Common in Wyoming's forested mountain regions. Roosts under bark, in snags, and in buildings near timber.
Long-eared Myotis
Myotis evotis
Distinctive long ears relative to body size. Forest-dependent. Roosts in rock crevices and buildings.
California Myotis
Myotis californicus
Small western myotis widespread across Wyoming. Roosts in tree cavities, rock crevices, and buildings.
Yuma Myotis
Myotis yumanensis
Associated with water sources throughout Wyoming. Common in buildings and under bridges near rivers and lakes.
Fringed Myotis
Myotis thysanodes
Distinctive fringe of stiff hairs on the tail membrane. Roosts in caves, mines, and buildings across Wyoming.
Brazilian Free-tailed Bat
Tadarida brasiliensis
Also called the Mexican free-tailed bat. Reaches southern Wyoming in summer. Tail extends past the tail membrane.
Canyon Bat
Parastrellus hesperus
North America's smallest bat. Found in canyon country and rocky outcrops in southern Wyoming.
All Wyoming Bat Species Are Protected
Native Wyoming bat species are protected under Wyoming Game and Fish regulations. Several species also receive federal protections. The only legal way to remove bats from a building is humane exclusion, performed outside of maternity season when flightless pups could be present. Wyoming Wildlife Specialists follows Wyoming Fish and Game guidance on every job.