Image of volunteer using a bat detector

Acoustic Survey Legend and Results

Select a year from the list on the right to see where surveys have occurred and view the maps showing results from those surveys.

The maps display the route surveyed superimposed on an aerial photograph. Bat encounters along the route are indicated by a symbol that represents the species or group. These symbols are explained below:

Survey Years
2008
2009
2010
2011
2012
2013
2014
2015
2016


Species & Groups

General Classification (HFG, LFG)
  • Characteristic frequency identified near the minimum call frequency.
  • High Frequency Group (HFG) and Low Frequency Group (LFG) separated with a cutoff value of 35 kHz.
  • HFG and LFG are used if 1) too few calls were recorded to further separate, 2) if calls are of low quality recording (fragmented), 3) bat pass does not contain search-phase calls, or 4) general uncertainty.
Within Group Classification
 High Frequency Group (HFG) includes:
 Myotis
  MYLU = Myotis lucifugus [Little brown myotis]
  MYSE = Myotis septentrionalis [Northern long-eared
myotis]
 Labo / Pesu
  LABO = Lasiurus borealis [Eastern red bat]
  PESU = Perimyotis {=pipistrellus} subflavus [Eastern
pipistrelle]
 Low Frequency Group (LFG) includes:
  LACI = Lasiurus cinereus [Hoary bat]
 Epfu / Lano
  EPFU = Eptesicus fuscus [Big brown bat]
  LANO = Lasionycteris noctivagans [Silver-haired bat]




Notes



This site is produced in conjunction with the Wisconsin Aquatic and Terrestrial Resources Inventory and sponsored by the Wisconsin Department of Natural Resources. The information presented on this site is subject to the Wisconsin Department of Natural Resources' Legal Notices, Disclaimers, and Terms of Use.