Bat Acoustic Monitoring
Visualization Tool
(a companion to BatAMP)

Acoustic Monitoring

is essential for helping study and conserve bats in North America.

Photo: Silver-haired Bat (Lasionycteris noctivagans), José G. Martínez-Fonseca

Throughout North America, bats are the primary predators of nocturnal flying insects, providing millions of dollars in pest control services annually. Bats occur in nearly every habitat on the continent, from high elevation alpine forests to deserts and neighborhoods within our largest cities.

Because bats fly in the dark of night, it is challenging to understand their behaviors and monitor their population status.

To get around this challenge, biologists use bat detectors to better understand bat ecology. These devices record the echolocation calls of nearby bats, and combined with specialized software and expert knowledge, biologists can often identify bat species from these detections. Biologists deploy these detectors for one or more nights at locations across the continent throughout the year, and may monitor presence or activity of various bat species each night.

Progress so far:

  • 31,686,285 total bat detections
  • 6,692,179 detections of 42 species
  • 269,782 nights monitored during 22 years
  • 7,266 detectors operated by 373 contributors across 56 states and provinces

Bat Acoustic Monitoring Portal

This application is a companion to the Bat Acoustic Monitoring Portal (BatAMP).

BatAMP provides a central platform where biologists can upload their detection data in order to better understand the distribution, seasonal movement patterns, and population status of bats across North America. These data are then compiled for visualization within this tool.

Learn more about how to contribute data to BatAMP.

Bat Acoustic Monitoring Visualization Tool

This application enables you to explore bat monitoring data for 42 species across North America, allowing you to explore seasonal trends in species detections and explore bat activity for a particular location.

Explore individual species

Explore detailed monitoring data for each of the species included in this application. Each species has a dedicated visualization page that enables you to:

  • explore seasonal trends in activity or detections for different locations around North America.
  • explore locations where the species has been detected compared to areas where the species was not detected.
  • filter the data to explore trends for a given state or province as well as a given time period or season. You are able to combine multiple filters for season, year, state / province, and more.
  • view detailed detection information for each bat detector.

Explore species occurrences

Explore occurrence data aggregated across all species within this application. This allows you to:

  • explore trends in species co-occurrence.
  • see how many species have been detected at a given location based on sampling effort.
  • explore which species are detected in particular regions simply by zooming the map to the area you are interested in.
  • identify species mis-identification and information gaps.
Note: due to the methods involved in identifying echolocation calls to species, some species may be mis-identified may be present in the data used by this application. You should be particularly cautious with detections that are well outside the known range for the species.

Made possible by contributors like you

This application leverages the combined efforts of 373 contributors and would not be possible without their hard work. Together, these contributors have collected over 31,686,285 bat detections on 269,782 nights using 7,266 detectors, and they have collected 6,692,179 detections of at least 42 species.

Top contributors

sort:species detectionsbat detectionsnights monitoreddetectorsspecies detected
Montana NHP
3,047,074 detections
on 66,293 nights
using 184 detectors.

8 species detected.
46%of detections
Kevin Heist
1,640,748 detections
on 33,168 nights
using 273 detectors.

14 species detected.
25%of detections
Karen Blejwas
299,539 detections
on 42,111 nights
using 186 detectors.

6 species detected.
4%of detections
Corinna Pinzari
239,861 detections
on 13,579 nights
using 32 detectors.

1 species detected.
4%of detections
Paul Burger
190,548 detections
on 6,227 nights
using 118 detectors.

5 species detected.
3%of detections
Jenny Barnett
177,544 detections
on 4,816 nights
using 19 detectors.

13 species detected.
3%of detections

And Trevor Peterson, Jason Unruh, Chelsea Andreozzi, Ted Weller, Samantha Marcum, Zack Steel, Tom Malloy, Michael O'Farrell, Scott Osborn, Shawn Thomas, Jared Tomie, Liz Revette, Dirk Gard, Christine Swanson, Susan Loeb, Cori Lausen, Todd Mabee, Brian Heeringa, Cris Hein, Gail Collins, Miguel Ordenana, Roger Rodriguez, Carol Joseph, Joseph Danielson, Burger Paul, Nana Chroninger, Bryan Hamilton, Miguel Ordeñana, Jeff Mach, Kirsten Christopherson, Les Gyug, Aaron Haines... Show more...

This application was created by Brendan C. Ward at the Conservation Biology Institute  (CBI), now with Astute Spruce, LLC in partnership with Ted Weller at the U.S. Department of Agriculture Forest Service - Pacific Southwest Research Station.

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