Bats We Monitor Allen's Big-eared Bat Idionycteris phyllotis Read More Photo credit: Ernie Valdez Arizona Myotis Myotis occultus Read More Photo credit: Ernie Valdez Big Brown Bat Eptesicus fuscus Read More Photo credit: Audrey Holstead Big Free-tailed Bat Nyctinomops macrotis Read More Photo credit: Richard Hoyer Brazilian Free-tailed Bat Tadarida brasiliensis Read More Photo credit: Ernest Valdez California Leaf-nosed Bat Macrotus californicus Read More Photo credit: Alan Harper California Myotis Myotis californicus Read More Photo credit: Alan Harper Canyon Bat Parastrellus hesperus Read More Photo credit: Dan Neubaum Cave Myotis Myotis velifer Read More Photo credit: J. Scott Altenbach Desert Red Bat Lasiurus frantzii Read More Photo credit: Bureau of Reclamation Eastern Red Bat Lasiurus borealis Read More Photo credit: Jordi Segers Eastern Small-footed Myotis Myotis leibii Read More Photo credit: Valerie Kearny, Arkansas State University Evening bat Nycticeius humeralis Read More Photo Credit: K. Leeker Florida bonneted bat Eumops floridanus Read More Photo credit: Florida Fish & Wildlife Fringed Myotis Myotis thysanodes Read More Photo credit: Pipe Spring NPS Gray Myotis Myotis grisescens Read More Photo credit: Dane Smith Greater Bonneted Bat Eumops perotis Read More Photo credit: BLM Hawaiian Hoary Bat Lasiurus cinereus semotus Read More Photo credit: Corinna Pinzari Hoary Bat Lasiurus cinereus Read More Photo credit: Jose Martinez-Fonseca Indiana Myotis Myotis sodalis Read More Photo credit: Dane Smith Jamaican Fruit-eating Bat Artibeus jamaicensis Read More Photo credit: Steven Brewer Lesser Long-nosed Bat Leptonycteris yerbabuenae Read More Photo credit: Alan Schmierer Little Brown Bat Myotis lucifugus Read More Photo credit: Jordi Segers Long-eared Myotis Myotis evotis Read More Photo credit: Dan Neubaum Long-legged Myotis Myotis volans Read More Photo credit: Paul Cryan Mexican Long-nosed Bat Leptonycteris nivalis Read More Photo credit: Winifred Frick, BCI Mexican Long-tongued Bat Choeronycteris mexicana Read More Photo credit: Patrick Randall Northern Long-eared Myotis Myotis septentrionalis Read More Photo credit: Andrea Schuhmann Northern Yellow Bat Lasiurus intermedius Read More Photo credit: Kpix Photo Pallas' Mastiff Bat Molossus molossus Read More Photo credit: Thomas Cuypers Pallid Bat Antrozous pallidus Read More Photo credit: BCI Menden Pictures Peter's Ghost-faced Bat Mormoops megalophylla Read More Photo credit: Jennifer Krauel Pocketed Free-tailed Bat Nyctinomops femorosaccus Read More Photo credit: Saguaro NPS Rafinesque's Big-eared Bat Corynorhinus rafinesquii Read More Photo credit: Jason Slater, Florida Fish & Wildlife Conservation Commission Seminole Bat Lasiurus seminolus Read More Photo credit: Kathleen Smith, Florida FWCC Silver-haired Bat Lasionycteris noctivagans Read More Photo credit: Jose Martinez-Fonseca, NAU Southeastern Myotis Myotis austroriparius Read More Photo credit: Andrea Schuhmann Southern Yellow Bat Lasiurus ega Read More Photo credit: Arturo Munoz Southwestern Myotis Myotis auriculus Read More Photo credit: Bruce D. Taubert Spotted Bat Euderma maculatum Read More Photo credit: Paul Cryan Townsend's Big-eared Bat Corynorhinus townsendii Read More Photo credit: Ann Froschauer, USFWS Tricolored Bat Perimyotis subflavus Read More Photo credit: Andrea Schuhmann Underwood's Bonneted Bat Eumops underwoodi Read More Photo credit: J. Scott Altenbach Western Small-footed myotis Myotis ciliolabrum Read More Photo credit: Ian Maton Western Yellow Bat Lasiurus xanthinus Read More Photo credit: BLM California Yuma Myotis Myotis yumanensis Read More Photo credit: Dan Neubaum

522f1e11-8633-4060-8d58-5b4df21058a5 Photo credit: Kathleen Smith, Florida FWCC USFWS Next WNS & Listing Status Lasiurus seminolus Order: Chiroptera Suborder: Yangochiroptera Family: Vespertilionidae Call characteristics: High frequency caller (30-35 kHz range) Weight 1/4 - 1/2 oz (7 - 14 g) Body Length 3 1/2 - 4 3/4 in (8.9 - 12 cm) There are various sources for bat species range maps including IUCN , NatureServe , U.S. Fish and Wildlife Service ECOS , and the National Atlas of the United States . US SWAP National List IUCN Red List Canada Species at Risk Mexico Seminole Bat The seminole bat has red-brown fur with frosted tips and white patches on its shoulders. This species often roosts in pine trees and spanish moss. They range throughout the southeastern US and are active year-round when temperatures are warm enough. Seminole bats feed on leafhoppers, flies, beetles, and ants. Mothers usually have to 3-4 pups at a time. The lifespan of this species is unknown. Information used to populate this page was obtained from the following sources: NatureServe Explorer United States Fish and Wildlife Service Environmental Conservation Online System Bat Conservation International Bat Profiles National Atlas of the United States. (2011). North American Bat Ranges, 1830-2008. National Atlas of the United States. Available at: http://purl.stanford.edu/pz329xp4277. Taylor, M. 2019. Bats: an illustrated guide to all species. Washington, DC: Smithsonian Books. Conservation Status Previous Next

4c756a0f-e6bc-459e-a43a-d1f018b7a0c0 Photo credit: Andrea Schuhmann USFWS Next WNS & Listing Status Perimyotis subflavus Order: Chiroptera Suborder : Yangochiroptera Family : Vespertilionidae Call characteristics: High frequency caller (~40 kHz range) Weight 1/8 - 1/4 oz (4.6 - 7.9 g) Body Length 3 - 3 1/2 in (7.7 – 8.9 cm) There are various sources for bat species range maps including IUCN , NatureServe , U.S. Fish and Wildlife Service ECOS , and the National Atlas of the United States . US SWAP National List IUCN Red List Canada Species at Risk Mexico Tricolored Bat The tricolored bat (previously known as the eastern pipistrelle) is one of the smallest species in North America, with a short face and large eyes and ears. Its name comes from the characteristically tri-colored fur on its back, which shifts from dark at the base, yellowish-brown in the middle, and reddish-brown at the tips. This species prefers open woodlands and woodland edges, especially areas near water. Maternity roosts can be found in dead or live foliage, while caves, mines, and other rock crevices are used for summer roosts and winter hibernation. Tricolored bats prey on flying insects such as moths, mosquitoes, and ants. This species has suffered rapid population declines due to white-nose syndrome. Information used to populate this page was obtained from the following sources: NatureServe Explorer United States Fish and Wildlife Service Environmental Conservation Online System Bat Conservation International Bat Profiles National Atlas of the United States. (2011). North American Bat Ranges, 1830-2008. National Atlas of the United States. Available at: http://purl.stanford.edu/pz329xp4277. Taylor, M. 2019. Bats: an illustrated guide to all species. Washington, DC: Smithsonian Books. Conservation Status Previous Next

2d2a8e22-3959-4157-916f-16fd6358f684 Photo credit: Jordi Segers USFWS Next WNS & Listing Status Myotis lucifugus Order: Chiroptera Suborder: Yangochiroptera Family: Vespertilionidae Call characteristics: High frequency caller (~40 kHz range) Weight 1/8 - 1/2 oz (5 - 14 g) Body Length 2 3/8 - 4 in (6 - 10.2 cm) There are various sources for bat species range maps including IUCN , NatureServe , U.S. Fish and Wildlife Service ECOS , and the National Atlas of the United States . US SWAP National List IUCN Red List Canada Species at Risk Mexico Little Brown Bat The little brown Myotis' fur ranges from brown to yellowish to gray-brown. In its western range, the little brown Myotis prefers mountainous habitat and riparian areas in a variety of forest types. It can often be found roosting in man-made structures such as buildings, attics, and bat boxes in towns and open, arid areas. Little brown Myotis will also roost beneath the bark of dead trees, inside tree cavities, under rocks, and in woodpiles. The little brown Myotis consumes a wide variety of aquatic insects, from midges and mayflies to moths and beetles. Lactating females may consume up to half their body weight in insects during a single night while nursing pups. During winter, the little brown Myotis hibernates in caves and abandoned mines, aggregating in colonies that often number tens of thousands of individuals. This species is particularly susceptible to the fungal pathogen white-nose syndrome, which has caused populations to decline drastically. Information used to populate this page was obtained from the following sources: NatureServe Explorer United States Fish and Wildlife Service Environmental Conservation Online System Bat Conservation International Bat Profiles National Atlas of the United States. (2011). North American Bat Ranges, 1830-2008. National Atlas of the United States. Available at: http://purl.stanford.edu/pz329xp4277. Taylor, M. 2019. Bats: an illustrated guide to all species. Washington, DC: Smithsonian Books. Conservation Status Previous Next

a6800b82-f03a-40b3-a0de-068e6e1456a8 Photo credit: BLM California USFWS Next WNS & Listing Status Lasiurus xanthinus Order: Chiroptera Suborder: Yangochiroptera Family: Vespertilionidae Call characteristics: High frequency caller (~50 kHz range) Weight 1/3 - 4/5 oz (9.2 - 22.5 g) Length 4 - 4 1/3 in (10 – 11 cm) There are various sources for bat species range maps including IUCN , NatureServe , U.S. Fish and Wildlife Service ECOS , and the National Atlas of the United States . US SWAP National List IUCN Red List Canada Species at Risk Mexico Western Yellow Bat The western yellow bat has blonde fur, darkened in the vicinity of its ears. Found throughout Mexico and the southwestern United States, it occupies a large range of habitats including riparian woodlands, desert regions, and tropical forests. The western yellow bat roosts in trees and within dead palm fronds, well-camouflaged by its yellowish fur. This bat migrates south for the winter but does not hibernate. Beetles are the main food source of western yellow bats though they will eat other insects. Mothers usually rear two to four pups annually. Information used to populate this page was obtained from the following sources: NatureServe Explorer United States Fish and Wildlife Service Environmental Conservation Online System Bat Conservation International Bat Profiles National Atlas of the United States. (2011). North American Bat Ranges, 1830-2008. National Atlas of the United States. Available at: http://purl.stanford.edu/pz329xp4277. Taylor, M. 2019. Bats: an illustrated guide to all species. Washington, DC: Smithsonian Books. Conservation Status Previous Next

0aa82f2d-f4ac-48e2-927e-ce9bfb5f3e28 Photo credit: Steven Brewer USFWS Next WNS & Listing Status Artibeus jamaicensis Order: Chiroptera Suborder: Yangochiroptera Family: Phyllostomidae Call characteristics: Low frequency caller (15 kHz) Weight 1 2/5 - 2 oz (40 - 60 g) Body Length 3 - 3 1/2 in (7.5 - 8.9 cm) There are various sources for bat species range maps including IUCN , NatureServe , U.S. Fish and Wildlife Service ECOS , and the National Atlas of the United States . US SWAP National List IUCN Red List Canada Species at Risk Mexico Jamaican Fruit-eating Bat The Jamaican fruit-eating bat, also known as the Mexican fruit bat, has dark brown fur, a short nose, prominant nose leaf, and noticable bumps on its lower lip. This species lives in tropical habitats where it roosts in caves, trees, buildings, and leaf tents. Its range extends from southern Mexico to northwest Peru and additionally on islands including the Florida Keys, Trinidad, and Tobago. The Jamaican fruit-eating bat eats fragrant fruits including figs, which it carries to a feeding roost to dine on. By carrying fruit to a differnt location before eating, this bat spreads seeds. Mothers typically carry a single pup at a time. The Jamaican fruit-eating bat has a lifespan of 9 to 10 years in the wild. Information used to populate this page was obtained from the following sources: NatureServe Explorer United States Fish and Wildlife Service Environmental Conservation Online System Bat Conservation International Bat Profiles National Atlas of the United States. (2011). North American Bat Ranges, 1830-2008. National Atlas of the United States. Available at: http://purl.stanford.edu/pz329xp4277. Taylor, M. 2019. Bats: an illustrated guide to all species. Washington, DC: Smithsonian Books. Conservation Status Previous Next

388f9e3b-b61a-435a-b6f4-6fc65dbee5f3 Photo credit: Bruce D. Taubert USFWS Next WNS & Listing Status Myotis auriculus Order : Chiroptera Suborder : Yangochiroptera Family: Vespertilionidae Call characteristics: High frequency caller (~40 kHz range) Weight 1/5 - 1/3 oz (5 - 8 g) Body Length 3 - 3 1/2 in (7.8 - 8.8 cm) There are various sources for bat species range maps including IUCN , NatureServe , U.S. Fish and Wildlife Service ECOS , and the National Atlas of the United States . US SWAP National List IUCN Red List Canada Species at Risk Mexico Southwestern Myotis Southwestern myotis have dull brown fur, with brown wing membranes and ears which distinguish them from other Myotine bats in the southwestern U.S.; all of which have black wing membranes and ears. Its range extends south from New Mexico and Arizona into Mexico and Guatemala. Preferred habitat consists of dry forests and shrublands, ranging from ponderosa pine to mesquite. Southwestern myotis are often found in areas with rocky cliffs, and maternity colonies have been documented in hollow tree cavities. Its diet consists mostly of moths. Females give birth to a single pup each season. Information used to populate this page was obtained from the following sources: NatureServe Explorer United States Fish and Wildlife Service Environmental Conservation Online System Bat Conservation International Bat Profiles National Atlas of the United States. (2011). North American Bat Ranges, 1830-2008. National Atlas of the United States. Available at: http://purl.stanford.edu/pz329xp4277. Taylor, M. 2019. Bats: an illustrated guide to all species. Washington, DC: Smithsonian Books. Conservation Status Previous Next

Back to Search ERROR WARNING: A Internal winter hibernaculum survey must have a site use type of hibernacula or winter roost HOW TO RESOLVE: 'Site Use Type' missing required entry of 'winter hibernacula' or 'winter non-hibernacula'. Ensure each record includes values for all required fields before re-uploading. ADDED EXPLANATION: Surveys must include key fields that answer the "where, what, when, and who" questions: either a GRTS Cell ID or latitude/longitude to locate the survey, a Site Name to describe the place, survey start and end times, and the names of surveyors. Each survey type may also require a few additional fields. If required columns are missing entirely, the upload wizard will block the file. If required columns are present but individual rows lack values, those rows will be flagged while the rest of the file can load. Use the template's informational header rows to identify which fields are required and ensure each data entry row contains values for these fields before uploading.

658b8eed-12d9-4720-8eb1-a36d7c190881 Photo credit: J. Scott Altenbach USFWS Next WNS & Listing Status Eumops underwoodi Order: Chiroptera Suborder: Yangochiroptera Family: Mollosidae Call characteristics: Low frequency caller (10-25 kHz) Weight 1 2/5 - 1 3/4 oz (40 - 50 g) Body Length 6 - 6 1/3 in (15 - 16 cm) There are various sources for bat species range maps including IUCN , NatureServe , U.S. Fish and Wildlife Service ECOS , and the National Atlas of the United States . US SWAP National List IUCN Red List Canada Species at Risk Mexico Underwood's Bonneted Bat Underwood's bonneted bat has a gray to sandy brown color and large ears. It is the second largest bat in the US after the greater bonneted bat. This species lives in desert, grassland, and decidious forest habitats and has been observed roosting in cacti, under palm fronds, and among foliage. Its range spreads from southern Arizona to Nicaragua and this species migrates south for the winter. This bat is fast and has been clocked flying at speeds over 43 km/hr (27 mi/hr)! Underwood's bonneted bat feeds on insects including leafhoppers, moths, grasshoppers, and beetles. Mothers give birth to one pup per year. Information used to populate this page was obtained from the following sources: NatureServe Explorer United States Fish and Wildlife Service Environmental Conservation Online System Bat Conservation International Bat Profiles National Atlas of the United States. (2011). North American Bat Ranges, 1830-2008. National Atlas of the United States. Available at: http://purl.stanford.edu/pz329xp4277. Taylor, M. 2019. Bats: an illustrated guide to all species. Washington, DC: Smithsonian Books. Conservation Status Previous Next

Create Account Plan Project Collect Data Prep/Process Data Upload Data Data QA/QC Get Data Species Codes Resource Library RESOURCES Basic instructions for the NABat workflow can be accessed through the above buttons.

Back to Search ERROR WARNING: null value in column "" violates not-null constraint HOW TO RESOLVE: Enter missing required data based on the template's header rows—the third row indicates 'required' status by field, and the second row lists data type restrictions. Ensure each record includes values for all required fields before re-uploading. ADDED EXPLANATION: Surveys must include key fields that answer the "where, what, when, and who" questions: either a GRTS Cell ID or latitude/longitude to locate the survey, a Site Name to describe the place, survey start and end times, and the names of surveyors. Each survey type may also require a few additional fields. If required columns are missing entirely, the upload wizard will block the file. If required columns are present but individual rows lack values, those rows will be flagged while the rest of the file can load. Use the template's informational header rows to identify which fields are required and ensure each data entry row contains values for these fields before uploading.

90ab5b3d-8435-43a5-8bde-143b04e488b1 Photo credit: Alan Harper USFWS Next WNS & Listing Status Macrotus californicus Order: Chiroptera Suborder : Yangochiroptera Family: Phyllostomidae Call characteristics: Low decibel caller (whispering) Weight 1/4 - 3/5 oz (8 - 17 g) Body Length 1 1/5 - 5 1/3 in (4 – 13.5 cm) There are various sources for bat species range maps including IUCN , NatureServe , U.S. Fish and Wildlife Service ECOS , and the National Atlas of the United States . US SWAP National List IUCN Red List Canada Species at Risk Mexico California Leaf-nosed Bat The California leaf-nosed bat has gray to dark brown pelage, with often-paler ventral fur. The California leaf-nosed bat prefers hunting sans echolocation, using its sizeable ears and eyes to detect its prey outright. This bat mostly eats large insects and is one of the few bat species to eat caterpillars; it may supplement its insect diet with cacti fruit. This desert species can be found in scrub habitat of the Mojave and Sonoran Deserts. It is not well-suited to long flight and does not migrate nor hibernate. Mothers rear one pup per year. The California leaf-nosed bat roosts in rocky areas, caves, and mines and can survive to 20-30 years of age in the wild. Information used to populate this page was obtained from the following sources: NatureServe Explorer United States Fish and Wildlife Service Environmental Conservation Online System Bat Conservation International Bat Profiles National Atlas of the United States. (2011). North American Bat Ranges, 1830-2008. National Atlas of the United States. Available at: http://purl.stanford.edu/pz329xp4277. Taylor, M. 2019. Bats: an illustrated guide to all species. Washington, DC: Smithsonian Books. Conservation Status Previous Next