Brazilian (Mexican) free-tailed bat
Tadarida brasiliensis
The Brazilian free-tailed bat is a medium-sized molossid famous for forming some of the largest aggregations of mammals on Earth, though Utah populations are much...
Big brown bat
Eptesicus fuscus
The Big brown bat is one of the largest and most robust members of the vespertilionid family commonly encountered in North America. This sturdy bat...
Allen's big-eared bat
Idionycteris phyllotis
Allen's big-eared bat is an immediately recognizable species due to its enormous ears, which are among the largest in proportion to body size of any...
Spotted bat
Euderma maculatum
The Spotted bat is arguably the most visually striking bat species in North America, with a color pattern unlike any other mammal. The dorsal pelage...
Townsend's big-eared bat
Corynorhinus townsendii
Townsend's big-eared bat is distinguished by enormous ears (30--40 mm long when extended) that are even more prominent than the bat's head length, giving it...
Hoary bat
Lasiurus cinereus
The Hoary bat is one of the largest, most beautiful, and most distinctive bats in North America, with pelage that appears frosted or hoary (giving...
Western red bat
Lasiurus blossevillii
The Western red bat is a medium-sized tree bat with striking coloration and beautiful, dense fur. The species shows pronounced sexual dichromatism—males typically display bright...
Silver-haired bat
Lasionycteris noctivagans
The Silver-haired bat is a medium-sized, strikingly beautiful bat characterized by its unique silver-frosted appearance. The dorsal pelage is dark brown to blackish-brown with conspicuous...
Pallid bat
Antrozous pallidus
The Pallid bat is a large, distinctive bat easily recognized by its very pale coloration, enormous ears, and unusual foraging behavior. The dorsal pelage is...
Canyon bat
Parastrellus hesperus
The Canyon bat (formerly Western pipistrelle) is the smallest bat species in North America and among the smallest in the world, making it instantly recognizable...
Long-legged myotis
Myotis volans
The Long-legged myotis is a medium-sized member of the Myotis genus named for its proportionally longer hind legs, though this feature is difficult to observe...
Occult myotis
Myotis occultus
Small Myotis recently recognized as distinct species, formerly confused with Arizona myotis and other small western Myotis. Pelage dull brown to dark brown, often appearing...
Fringed myotis
Myotis thysanodes
The Fringed myotis is a medium-sized Myotis with distinctive features that, once observed, make identification straightforward. The defining characteristic is a conspicuous fringe of short,...
Little brown myotis
Myotis lucifugus
The Little brown myotis is a small, historically very common bat with glossy brown fur and relatively plain features typical of the Myotis genus. The...
Long-eared myotis
Myotis evotis
The Long-eared myotis is a medium-sized Myotis immediately recognizable (when the ears are visible) by its disproportionately long ears—the longest ears relative to body size...
California myotis
Myotis californicus
The California myotis is among the smallest bats in North America, characterized by tiny size, relatively dull coloration, and plain features. The dorsal pelage ranges...
Yuma myotis
Myotis yumanensis
The Yuma myotis is a small to medium-sized member of the Myotis genus with relatively dull coloration and a strong association with aquatic habitats. The...
Western small-footed myotis
Myotis ciliolabrum
The Western small-footed myotis is one of the smallest bat species in North America, characterized by tiny size, small feet, and variable but often pale...