869e63ea-84a0-4062-8501-2452f2a88d87 Photo credit: Kpix Photo USFWS Next WNS & Listing Status Lasiurus intermedius Order: Chiroptera Suborder: Yangochiroptera Family: Vespertilionidae Call characteristics: Low frequency caller (~20 kHz range) Weight 1/2 - 3/4 oz (14 - 21 g) Body Length 4 1/2 - 5 in (11.4 - 13 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 Northern Yellow Bat The northern yellow bat has yellow-orange to brownish fur with a furry upper tail membrane. They reside in coastal regions of the Atlantic and Gulf of America and are associated with long-leaf pines, palm trees, and live oaks and are known to roost in Spanish Moss and foliage. This species does not migrate but does enter torpor on cool evenings. Its favorite foods include true bugs, flies, beetles, and ants. Mothers often give birth to triplets. It is unknown how old this species lives to be 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

NORTH AMERICAN BAT MONITORING PROGRAM NABat is a multi-national, multi-agency coordinated continental bat program. This program is made up of an extensive community of partners across the continent who use standardized protocols to gather data that allow us to assess population status and trends, inform responses to stressors, and sustain viable bat populations. Photo: Jordi Segers More About NABat Background Our Team Importance of Bats Threats to Bats Our Network Bats We Monitor Methods and Sample Design Products & Publications

Back to Search ERROR WARNING: Unable to distrubte transect points HOW TO RESOLVE: Ensure each row has a valid location combination: 'GRTS Cell Id' alone, 'GRTS Cell Id' with 'Quadrant', or 'Latitude'/'Longitude'. Verify longitudes are negative and lat/long values aren't swapped. If both 'GRTS Cell Id' and coordinates are present but conflict, remove whichever you trust less—delete the 'GRTS Cell Id' value (keeping the column) if you trust coordinates, or omit lat/long to let the system match on cell ID and site name. Ensure site names are unique to prevent ambiguity. For repeat visits to established sites, verify coordinates remain consistent—new coordinates within 55m of an existing site are ignored, coordinates 55–100m away create a new map point but maintain site association, but coordinates exceeding 100m generate an entirely new site record, breaking data continuity and preventing trend analyses. Mobile transect surveys operate under different logic that matches primarily on unique Site Name values; see "ADDED EXPLANATION" for details. ADDED EXPLANATION: NABat requires at least a 'GRTS Cell Id' to assign surveys to a 10×10 km grid cell, but recommends providing additional granularity via 'Quadrant' or 'Latitude'/'Longitude' when possible. Location errors occur when this information is missing, ambiguous, or internally conflicting. Ambiguity commonly arises when generic site names (e.g., "Bridge 1" or "Cave") are reused across multiple locations, or when provided coordinates fall outside the boundaries of the stated GRTS cell. For large datasets, load coordinates into GIS or mapping tools to verify placements and catch systematic issues such as swapped lat/long columns or missing negative signs. To avoid unintentional site splits when revisiting established sites, verify coordinates match prior uploads or omit coordinates entirely to let the system match on Site Name alone. Mobile transect surveys can match solely on a unique 'Site Name' value, bypassing some ambiguity checks applied to other survey types. It is recommended that users draw a line object representing their route on the project map, named to exactly match the Site Name value(s) in the upload file. The portal can then estimate missing lat/long coordinates by combining route geometry with elapsed time during the survey. Without a defined line object, surveys traversing multiple GRTS cells with missing coordinates cannot be processed—users must estimate coordinates themselves or provide the 'GRTS Cell Id' for each record. Surveys occurring entirely within a single cell should still have their route drawn; however, users preferring coarser resolution can provide only the 'GRTS Cell Id'.

Back to Search ERROR WARNING: FOREACH expression must not be null 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. Example: The "Auto Id" field in the acoustic templates must include one of the controlled categorical responses listed in the second header row. An entry for this field is 'REQUIRED' for successful data upload. 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.

4c284fbc-d068-4aae-8ee8-bc55fee97c57 Photo credit: Ernie Valdez USFWS Next WNS & Listing Status Idionycteris phyllotis Order: Chiroptera Suborder: Yangochiroptera Family: Vespertillionidae Call characteristics: Low frequency caller (~25 kHz) Weight 1/4 - 1/2 oz (8 - 16 g) Body Length 4 - 4 2/3 in (10.3 - 11.8 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 Allen's Big-eared Bat Allen's big-eared bat has long, dark brown fur with lighter tips and a black patch on each shoulder. This species has very long (1-1.5 in) ears! The species is often associated with pinyon pine, ponderosa pine, juniper, and oak and includes desert mountains in the southwestern US and Mexico. Maternity colonies have been observed in mines and dead trees. Allen's big-eared bats prefer to eat moths but also consume other flying insects. Mothers have 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

Back to Search ERROR WARNING: is an invalid boolean HOW TO RESOLVE: Use the template's second header row to view data type requirements and replace erroneous data in flagged field based on the field's listed requirements. Adjust cell formats or use find/replace to convert values to the correct type. Example: The "Microphone Weather Proofing" field in the stationary acoustic template allows for only "True" or "False" entries. If any other entry is included for this field, the "invalid boolean" warning will appear. If the "|" pipe symbol at the start of header row gets accidentally removed, those rows will no longer be treated as headers and instead will be read in as data rows. This results in categorical or data type errors like, " is an invalid boolean". Simply make sure a pipe symbol "|" is included at the start of each header row and re-upload your csv to the Partner Portal. ADDED EXPLANATION: Each field in the template requires a particular data type (text, integer, decimal, date-time, or true/false) or a controlled categorical response. Values that don't match these requirements will be rejected. In a spreadsheet, adjust cell formats or use find/replace to convert values—for example, changing numbers stored as text into actual numbers, converting decimals to integers, or trimming time-zone suffixes from date-time strings. For widespread issues in non-required fields, consider omitting the column entirely and re-uploading.

185712bc-0a92-4e67-868f-fd766d18d8c0 Photo credit: Andrea Schuhmann USFWS Next WNS & Listing Status Myotis septentrionalis Order: Chiroptera Suborder: Yangochiroptera Family: Vespertilionidae Call characteristics: High frequency caller (~40 kHz range) Weight 1/4 - 3/8 oz (6 - 9 g) Body Length 3 1/8 in (7.8 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 Northern Long-eared Myotis The northern long-eared Myotis has light brown fur on its back with paler gray fur on its underside. The face, ears, and membranes are dark. This species' ears are long compared to other bats in the Myotis genus and feature a characteristically sharp and pointed tragus. In the summer, the northern long-eared Myotis can be found in its more northern range, preferring dense forest stands. Roosts are primarily located in trees and buildings, with maternity roosts often found beneath the exfoliating bark of dead trees or within tree cavities. Winter roosts are typically located in small caves or crevices, such as underground mines. Typically, this species roosts alone or in small groups (about 20-60 females to a maternity roost). Moths constitute the primary diet of this species. The fungal pathogen white-nose syndrome, has caused population declines of up to 99% at hibernation sites. 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

da614f33-c539-44a0-9514-ed406ede658c Photo credit: J. Scott Altenbach USFWS Next WNS & Listing Status Myotis velifer Order: Chiroptera Suborder: Yangochiroptera Family: Vespertilionidae Call characteristics: High frequency caller (~40 kHz range) Weight 1/4 - 1/2 oz (7 - 14 g) Body Length 2.25 in (5.6 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 Cave Myotis The cave Myotis varies in appearance depending on region, with individuals in the eastern portion of the range having paler brown fur and individuals in the west appearing darker brown. The face, ears, and wing membranes are a dark, dusky color. Prey includes moths, beetles, weevils, and other insects. The cave Myotis prefers forested habitat across a range of elevations. This species roosts in caves, tunnels, buildings, and abandoned mines. Some cave Myotis have been observed migrating south for winter, while others hibernate near their summer habitat. Disturbance and encroaching vegetation that impedes access to cave roosts pose a threat to this species. 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

02fcfc5d-f162-4850-8afe-893c6611e891 Photo credit: Corinna Pinzari USFWS Next WNS & Listing Status Lasiurus cinereus semotus Order: Chiroptera Suborder: Yangochiroptera Family: Vespertilionidae Call characteristics: Low frequency caller (~30 kHz range) Weight 1/2 – 6/10 oz (14 - 18 g) Body Length 4 - 5 in (10 - 13 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 Hawaiian Hoary Bat The Hawaiian hoary bat is the only terrestrial mammal native to the state of Hawaii, and it is also known as ʻōpeʻapeʻa which means “half-leaf”. This species is characterized by reddish-brown fur with silvery tints and is almost identical in appearance to the hoary bat found in North America. The Hawaiian hoary bat is smaller bodied compared to its mainland North American counterpart, ranging between 14 – 18 grams. Hawaiian hoary bats typically roost in the leaves of trees, and they migrate seasonally by elevation. They can forage for a wide variety of prey types, but primarily feed on moths. This subspecies is listed as endangered under the Endangered Species Act. 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 recording name is unique to a project and can only be processed as part of one deployment. An entry of this recording name already exists HOW TO RESOLVE: Duplicate errors occur when the system encounters repeated survey records. This error typically occurs when duplicate records occur within an individual csv. Use conditional formatting on a unique identifier—such as 'Audio Recording Name' for acoustic surveys, or a concatenated set of fields (using CONCAT or TEXTJOIN) for other survey types—to highlight repeated rows, then delete or consolidate them. If duplicates persist despite removing and re-uploading affected data, contact the NABat Technical Outreach Team. ADDED EXPLANATION: The duplicate detection logic in the NABat database varies by survey type. For emergence count surveys, each unique combination of Site Name, Exit Identifier (if provided), Surveyor, and Species should appear in a single row—multiple rows from the same surveyor for the same combination are flagged as duplicates, whereas rows from different surveyors are averaged to produce the final count. Roost count surveys use different logic: counts are summed within each surveyor's report for a given site, section, and species, and if multiple surveyors report, their sums are averaged—so duplicates are not flagged in the same way. Beyond survey-type logic, duplicate errors can arise from re-uploading the same data in quick succession, inadvertently uploading the same survey under different file names, accidental copy/paste duplication within a file, or leftover data from older versions of the upload logic. When identifying duplicates within a file, Excel's Conditional Formatting (Home → Styles → Conditional Formatting → Highlight Cells → Duplicate Values) can highlight repeated values in a unique identifier column. For surveys lacking a single unique field, create a new column that concatenates key fields to form a composite identifier. When comparing across uploads, note the conflicting file's name and created date in the Partner Portal, download it, and review side-by-side with your current file to determine which version is more complete or accurate. In rare cases, the database may retain artifacts of previously deleted data that trigger duplicate errors on subsequent uploads—if you suspect this scenario after repeated removal and re-upload attempts, contact the NABat Technical Outreach Team to investigate.

dd95a9de-ff48-4c3d-823e-6a156b1cb0cd Photo credit: Dane Smith USFWS Next WNS & Listing Status Myotis grisescens Order: Chiroptera Suborder: Yangochiroptera Family: Vespertilionidae Call characteristics: High frequency caller (~50 kHz range) Weight 1/4 - 5/8 oz (7 - 16g) Body Length 3-4 in (7-10 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 Gray Myotis The gray Myotis has light to dark brown fur with long, dark ears. Ears are longer than many other Myotis species, extending 1/4 cm (7 mm) beyond the nose when laid forward and featuring a long and thin tragus. The gray Myotis has a keeled calcar. When foraging, gray Myotis prefer to feast on flying insects like mayflies and beetles. This species almost exclusively roosts in caves throughout the year. In the summer, they can be found in warmer caves located in close proximity to water sources. In winter, the species prefers cool, deep, well aerated caves. Appropriate cave temperatures are essential for hibernation and rearing young. During winter, it is estimated that 95% of the known population of gray Myotis occur in just nine caves. 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: is an invalid float HOW TO RESOLVE: Use the template's second header row to view data type requirements and replace erroneous data in flagged field based on the field's listed requirements. Non-numeric entries are typically the source of this error. Example: The "Latitude" field in the stationary acoustic template accepts float data. Non-numeric entries, e.g. a string value, or numbers with incorrect characters like a comma. If the "|" pipe symbol at the start of header row gets accidentally removed, those rows will no longer be treated as headers and instead will be read in as data rows. This results in categorical or data type errors like, " is an invalid float". Simply make sure a pipe symbol "|" is included at the start of each header row and re-upload your csv to the Partner Portal. ADDED EXPLANATION: Each field in the template requires a particular data type (text, integer, decimal, date-time, or true/false) or a controlled categorical response. Values that don't match these requirements will be rejected. In a spreadsheet, adjust cell formats or use find/replace to convert values—for example, changing numbers stored as text into actual numbers, converting decimals to integers, or trimming time-zone suffixes from date-time strings. For widespread issues in non-required fields, consider omitting the column entirely and re-uploading.