Flight 93 Memorial acoustic survey

The Tribute in Light at the Flight 93 National Memorial was begun in 2020 to commemorate the Americans who died during the terrorist hijacking in Pennsylvania. The National Park Service contracts with Vesper to provide advice on study design, staff training, and protocols to determine how migrating birds and bats react to the display. We use stationary and mobile detectors (SM4, Mini Bat, Walkabout, EchoMeter) to collect data on bat species and behavior. We are proud to be part of the process to honor our fallen and protect our species.

Southeast Alaska NABat Surveys

Vesper identified species for ~90,000 bat calls recorded over 4 years at 77 locations by the Alaska Department of Fish and Game. The surveys supported the North American Bat Monitoring Program (NABat) to help track long-term trends in the bat populations of southeast Alaska. Species included little brown, California, Yuma, long-legged, western long-eared, and silver-haired bats. An excellent partnership!

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Orient Wind Farm

In collaboration with Bat Conservation International and the Electric Power Research Institute, Vesper led human crews and dog detection teams to collect fatality, acoustic, and thermal imaging data. This information was used to test two U.S. Department of Energy projects aimed at reducing bat mortality at wind farms.

Midwest T&E Surveys

SWCA Consulting contracted Vesper to lead a netting crew and survey for threatened northern long-eared bats at a proposed wind energy facility in the Midwest.

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Acoustic Trainings

Vesper provides online classes for graduate students, wildlife professionals, and enthusiasts seeking to learn diagnostic acoustic characteristics for bat species. Recent classes were for species in the Northeast and Southeast U.S., including T&E species (Indiana bat, northern long-eared bat, gray bat, Florida bonneted bat).

Belize Bat Workshops

Vesper led multiple week-long workshops in Belize on bat capture techniques and acoustic identification. Participants captured up to 19 species, acoustically identified an additional 20 species, and still had time to explore Mayan ruins, kayak through caves, and enjoy Belizean culture.