Pallid Bat yellowish to cream-colored fur & large ears to hear insects unique in feeding almost entirely on the ground – ground-dwelling insects forms groups arid& semi-arid habitat southern Idaho 1-3 pups per year Towsend’s big-eared bat




Дата канвертавання24.04.2016
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Idaho Bats

- 14 species in 1 family, Vespertilionidae



- all are insectivores
Pallid Bat

  • yellowish to cream-colored fur & large ears to hear insects

  • unique in feeding almost entirely on the ground – ground-dwelling insects

  • forms groups

  • arid& semi-arid habitat

  • southern Idaho

  • 1-3 pups per year


Towsend’s big-eared bat

  • brown to gray fur with very long ears

  • feeds on moths & other insects

  • commonly found in desert scrub & pine forests, but uses diverse habitats

  • found across Idaho

  • single pup per year


Big brown bat

  • occupies diverse habitats

  • specializes on beetles as well as other insects

  • commonly found in buildings & human-altered areas

  • single pup per year


Silver-haired bat

  • fur on back is long with silver tips

  • feeds on beetles & other insects

  • inhabits forested areas & requires old growth for roosting

  • roosts in tree cavities or bark

  • found across Idaho

  • has twin pups per year


Hoary bat

  • largest bat in Idaho (one of the largest bats in NA)

  • hoary “frosted” hair

  • inhabits forest edges

  • hoary bat is Hawaii’s only native mammal

  • found across Idaho

  • migrates south for winter

  • roosts singly in trees

  • 1-4 pups (2 is most common) per year



California myotis

  • brown or pale fur on back and across the head

  • roosts in snags and beneath loose bark of trees

  • some of the smallest bats in NA

  • feed on tiny insects

  • uses diverse habitats – forests to deserts

  • occurs in northern & central Idaho

  • 1 pup per year


Western small-footed myotis


Long-eared myotis

  • dark brown fur & long, thin ears

  • inhabits forests, often at higher elevations

  • one of 2 bats in NA bat that commonly roosts at ground level (western small-footed is the other species)

  • feeds on moths, beetles, and other insects

  • occurs across Idaho

  • 1 pup annually


Little brown bat

  • fur is brown on back

  • inhabits forested areas in mountainous terrain

  • forages over water & feeds on aquatic insects

  • occurs across Idaho

  • 1 pup annually


Long-legged myotis



Yuma myotis

  • pale brown fur on back & tail membrane with hair

  • often found under bridges or in buildings

  • typically forage over water on moths & aquatic insects

  • documented in southern Idaho

  • maternity colonies known in Hells Canyon

  • 1 pup annually


Western pipistrelle

  • very small bat with grayish coloration on the back

  • uses arid, rocky canyons

  • feeds on small swarming insects (ants, mosquitos)

  • more crepuscular than other bats (roosts in middle of night)

  • occurs in western Idaho

  • 1-2 pups per year


Fringed myotis

  • fringed tail membrane (uropatagium)

  • found in desert, oak, a juniper woodlands, or mixed forests

  • feeds on smaller isects and spiders

  • uncommon in Idaho – occurrences in north and central Idaho

  • 1 pup per year


Spotted bat

  • distinct coat -- black with white patches

  • very large ears

  • uses desert woodlands or rocky areas in forests -- roosts in canyons/cliffs

  • only Idaho bat to produce echolocation calls that humans can hear

  • documented in southwestern Idaho

  • feeds mainly on moths

  • 1 pup per year


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