North American Bat Monitoring Program (NABat)
Bats are essential contributing members of healthy, functioning ecosystems. They perform numerous ecosystem services like insect pest control and plant pollination, and provide enormous economic benefits through ecotourism, medical research, and novel biotechnologies. North American bats face unprecedented threats including habitat loss and fragmentation, white-nose syndrome, and wind energy development. However, it is difficult to evaluate the impacts of these threats due to a lack of basic information about the distribution and abundance of bats across the continent.
The North American Bat Monitoring Program (NABat) was established in 2015 as a multi-national, multi-agency coordinated bat population monitoring program. NABat was designed to unify and enable a dispersed community to practicably monitor an entire continent at repeated intervals, assemble data from individual efforts in a centralized database and deliver status and trends for one of North America’s critical resources – bats.
The NABat Partner Portal
The NABat Partner Portal serves as the interface between NABat partners and the NABat database, enabling users to upload, archive, and access their own data or request data from other NABat partners. The Partner Portal also features a variety of web-based tools to assist users in project planning and mapping.
About NABat
Population status and trends and other analytical outputs provide resource managers with key information for managing bat populations. Data collected and assembled by NABat partners can be used to improve our understanding of species distributions, detect signs of population declines, assess species vulnerability to potential threats, measure recovery, and much more. To facilitate the delivery of such information, the primary goals of the NABat program are to:
- Increase the quantity and quality of available data on North American bats
- Make data available for addressing bat conservation problems and management needs
- Use these data to provide regular updates on species status and trends
Now, ten years in, NABat serves as the information system for 47 North American bat species, supporting informed decision-making through robust data collection, data management, and analysis.
Progress to date has been achieved by leaning on 5 key pillars:
- A network of collaborative scientists, resource managers, policy makers, and conservationists who share data and knowledge
- Protocols and guidance that are consistent, yet flexible
- A probabilistic sample design that helps optimize the use of limited resources
- A centralized database that facilitates best practice for data management
- Analytical support and products providing multiple lines of evidence to fill local and range-wide information needs
NABat by the Numbers
In 2025, NABat contains records from stationary acoustic surveys, mobile acoustic surveys, capture surveys, internal roost counts, and emergence counts from over 480 different partner organizations and 2400 users. As policy and partner needs evolve, the NABat database will as well.
Over the course of 5 years, the NABat database has grown to over 170,000,000 data records. In accordance with FAIR Guiding Principles these data conform to data standards for submission such that they may be collated in a common format, useful queries may be employed, and provenance is preserved.
Data in the NABat database are accessed to deliver bat population status and trends and provide technical assistance to partner agencies and are available for third parties to request. As of 2025, NABat has received over 400 third-party data requests.
Connect with NABat
Status and Trends of North American Bats Summer Occupancy Analysis 2010-2019 Data Release Status and Trends of North American Bats Summer Occupancy Analysis 2010-2019 Data Release
North American Grid-Based Offshore Sampling Frames North American Grid-Based Offshore Sampling Frames
Rangewide summertime model predictions for three bat species (Myotis lucifigus, Myotis septentrionalis, and Perimyotis subflavus) from acoustic and mist net data 2010 to 2019 Rangewide summertime model predictions for three bat species (Myotis lucifigus, Myotis septentrionalis, and Perimyotis subflavus) from acoustic and mist net data 2010 to 2019
In Support of the U.S. Fish and Wildlife Service 3-Bat Species Status Assessment: Winter Colony Count Analysis In Support of the U.S. Fish and Wildlife Service 3-Bat Species Status Assessment: Winter Colony Count Analysis
In Support of the U.S. Fish and Wildlife Service 3-Bat Species Status Assessment: Predicted Wind Take Allocated To Hibernacula Each Year Under Current and Future Scenarios In Support of the U.S. Fish and Wildlife Service 3-Bat Species Status Assessment: Predicted Wind Take Allocated To Hibernacula Each Year Under Current and Future Scenarios
In Support of the U.S. Fish and Wildlife Service 3-Bat Species Status Assessment: Summer Mobile Acoustic Transect Analysis In Support of the U.S. Fish and Wildlife Service 3-Bat Species Status Assessment: Summer Mobile Acoustic Transect Analysis
In Support of the U.S. Fish and Wildlife Service 3-Bat Species Status Assessment: Wind Energy Influence In Support of the U.S. Fish and Wildlife Service 3-Bat Species Status Assessment: Wind Energy Influence
Bat Occupancy Model Predictions for Colorado, acoustic data from 2016-2017 Bat Occupancy Model Predictions for Colorado, acoustic data from 2016-2017
North American Grid-Based Sampling Frame North American Grid-Based Sampling Frame
North American Bat Monitoring Program (NABat) Master Sample and Grid-Based Sampling Frame North American Bat Monitoring Program (NABat) Master Sample and Grid-Based Sampling Frame
Attributed North American Bat Monitoring Program (NABat) Master Sample and Grid-Based Sampling Frame Attributed North American Bat Monitoring Program (NABat) Master Sample and Grid-Based Sampling Frame
Introduction to NABat
Introduction to the North American Bat Monitoring Program, including a short history of the program, a review of key program components, and highlights of program outcomes and products.
Below are publications associated with this project.
U.S. Geological Survey science in support of the North American Bat Monitoring Program (NABat) U.S. Geological Survey science in support of the North American Bat Monitoring Program (NABat)
NABat ML: Utilizing deep learning to enable crowdsourced development of automated, scalable solutions for documenting North American bat populations NABat ML: Utilizing deep learning to enable crowdsourced development of automated, scalable solutions for documenting North American bat populations
Status and trends of North American bats: Summer occupancy analysis 2010-2019 Status and trends of North American bats: Summer occupancy analysis 2010-2019
Spatial Gaussian processes improve multi-species occupancy models when range boundaries are uncertain and nonoverlapping Spatial Gaussian processes improve multi-species occupancy models when range boundaries are uncertain and nonoverlapping
The scope and severity of white-nose syndrome on hibernating bats in North America The scope and severity of white-nose syndrome on hibernating bats in North America
NABat: A top-down, bottom-up solution to collaborative continental-scale monitoring NABat: A top-down, bottom-up solution to collaborative continental-scale monitoring
Evidence of region‐wide bat population decline from long‐term monitoring and Bayesian occupancy models with empirically informed priors Evidence of region‐wide bat population decline from long‐term monitoring and Bayesian occupancy models with empirically informed priors
North American Bat Monitoring Program regional protocol for surveying with stationary deployments of echolocation recording devices: Narrative version 1.0, Pacific Northwestern US North American Bat Monitoring Program regional protocol for surveying with stationary deployments of echolocation recording devices: Narrative version 1.0, Pacific Northwestern US
Statistical power of dynamic occupancy models to identify temporal change: Informing the North American Bat Monitoring Program Statistical power of dynamic occupancy models to identify temporal change: Informing the North American Bat Monitoring Program
Identifying occupancy model inadequacies: Can residuals separately assess detection and presence? Identifying occupancy model inadequacies: Can residuals separately assess detection and presence?
Occupancy modeling species–environment relationships with non‐ignorable survey designs Occupancy modeling species–environment relationships with non‐ignorable survey designs
A guide to processing bat acoustic data for the North American Bat Monitoring Program (NABat) A guide to processing bat acoustic data for the North American Bat Monitoring Program (NABat)
Improving geographically extensive acoustic survey designs for modeling species occurrence with imperfect detection and misidentification Improving geographically extensive acoustic survey designs for modeling species occurrence with imperfect detection and misidentification
Bats are essential contributing members of healthy, functioning ecosystems. They perform numerous ecosystem services like insect pest control and plant pollination, and provide enormous economic benefits through ecotourism, medical research, and novel biotechnologies. North American bats face unprecedented threats including habitat loss and fragmentation, white-nose syndrome, and wind energy development. However, it is difficult to evaluate the impacts of these threats due to a lack of basic information about the distribution and abundance of bats across the continent.
The North American Bat Monitoring Program (NABat) was established in 2015 as a multi-national, multi-agency coordinated bat population monitoring program. NABat was designed to unify and enable a dispersed community to practicably monitor an entire continent at repeated intervals, assemble data from individual efforts in a centralized database and deliver status and trends for one of North America’s critical resources – bats.
The NABat Partner Portal
The NABat Partner Portal serves as the interface between NABat partners and the NABat database, enabling users to upload, archive, and access their own data or request data from other NABat partners. The Partner Portal also features a variety of web-based tools to assist users in project planning and mapping.
About NABat
Population status and trends and other analytical outputs provide resource managers with key information for managing bat populations. Data collected and assembled by NABat partners can be used to improve our understanding of species distributions, detect signs of population declines, assess species vulnerability to potential threats, measure recovery, and much more. To facilitate the delivery of such information, the primary goals of the NABat program are to:
- Increase the quantity and quality of available data on North American bats
- Make data available for addressing bat conservation problems and management needs
- Use these data to provide regular updates on species status and trends
Now, ten years in, NABat serves as the information system for 47 North American bat species, supporting informed decision-making through robust data collection, data management, and analysis.
Progress to date has been achieved by leaning on 5 key pillars:
- A network of collaborative scientists, resource managers, policy makers, and conservationists who share data and knowledge
- Protocols and guidance that are consistent, yet flexible
- A probabilistic sample design that helps optimize the use of limited resources
- A centralized database that facilitates best practice for data management
- Analytical support and products providing multiple lines of evidence to fill local and range-wide information needs
NABat by the Numbers
In 2025, NABat contains records from stationary acoustic surveys, mobile acoustic surveys, capture surveys, internal roost counts, and emergence counts from over 480 different partner organizations and 2400 users. As policy and partner needs evolve, the NABat database will as well.
Over the course of 5 years, the NABat database has grown to over 170,000,000 data records. In accordance with FAIR Guiding Principles these data conform to data standards for submission such that they may be collated in a common format, useful queries may be employed, and provenance is preserved.
Data in the NABat database are accessed to deliver bat population status and trends and provide technical assistance to partner agencies and are available for third parties to request. As of 2025, NABat has received over 400 third-party data requests.
Connect with NABat
Status and Trends of North American Bats Summer Occupancy Analysis 2010-2019 Data Release Status and Trends of North American Bats Summer Occupancy Analysis 2010-2019 Data Release
North American Grid-Based Offshore Sampling Frames North American Grid-Based Offshore Sampling Frames
Rangewide summertime model predictions for three bat species (Myotis lucifigus, Myotis septentrionalis, and Perimyotis subflavus) from acoustic and mist net data 2010 to 2019 Rangewide summertime model predictions for three bat species (Myotis lucifigus, Myotis septentrionalis, and Perimyotis subflavus) from acoustic and mist net data 2010 to 2019
In Support of the U.S. Fish and Wildlife Service 3-Bat Species Status Assessment: Winter Colony Count Analysis In Support of the U.S. Fish and Wildlife Service 3-Bat Species Status Assessment: Winter Colony Count Analysis
In Support of the U.S. Fish and Wildlife Service 3-Bat Species Status Assessment: Predicted Wind Take Allocated To Hibernacula Each Year Under Current and Future Scenarios In Support of the U.S. Fish and Wildlife Service 3-Bat Species Status Assessment: Predicted Wind Take Allocated To Hibernacula Each Year Under Current and Future Scenarios
In Support of the U.S. Fish and Wildlife Service 3-Bat Species Status Assessment: Summer Mobile Acoustic Transect Analysis In Support of the U.S. Fish and Wildlife Service 3-Bat Species Status Assessment: Summer Mobile Acoustic Transect Analysis
In Support of the U.S. Fish and Wildlife Service 3-Bat Species Status Assessment: Wind Energy Influence In Support of the U.S. Fish and Wildlife Service 3-Bat Species Status Assessment: Wind Energy Influence
Bat Occupancy Model Predictions for Colorado, acoustic data from 2016-2017 Bat Occupancy Model Predictions for Colorado, acoustic data from 2016-2017
North American Grid-Based Sampling Frame North American Grid-Based Sampling Frame
North American Bat Monitoring Program (NABat) Master Sample and Grid-Based Sampling Frame North American Bat Monitoring Program (NABat) Master Sample and Grid-Based Sampling Frame
Attributed North American Bat Monitoring Program (NABat) Master Sample and Grid-Based Sampling Frame Attributed North American Bat Monitoring Program (NABat) Master Sample and Grid-Based Sampling Frame
Introduction to NABat
Introduction to the North American Bat Monitoring Program, including a short history of the program, a review of key program components, and highlights of program outcomes and products.
Below are publications associated with this project.