Bat Habitat and Bat Acoustic Studies

Bat set upMany bat species are currently endangered due to habitat loss and disease. Government agencies  pay special attention to this growing crisis and have put measures in place to protect bat habitat. Our staff use standardized Ministry of Natural Resources and Forestry (MNRF) survey protocols to complete bat habitat studies. NEA conducts two types of bat surveys on  project sites, bat maternity site and bat acoustic surveys.

Bats maternity and roosting sites can include caves, rock crevasses, buildings and trees. Our staff  search properties for the presence of these features. In addition, tree cavity and snag assessments are completed to identify possible maternity or roosting sites in forested sites. Our trained staff identify, measure and quantify candidate trees as part of the requirements for these assessments. Bat roosting or maternity sites are considered to be Significant Wildlife Habitat by MNRF.

Acoustic surveys are conducted in the summer to identify the presence of bats on the project site. State-of-the-art Wildlife Acoustics’ ultrasonic bat detectors are used for this specialized survey. These detectors record the high frequency calls emitted by bats and allow the differentiation of bat species based on their call. The success of this type of survey is dependent on the proper placement of the acoustic detector. Placement criteria include the surrounding habitat and acoustic qualities as well as the identification of potential bat commuter zones. The recorded data is then processed using a variety of software packages such as Kalaedoscope Pro, Echoclass, BCID and Analook.

Our staff has certification in bat acoustic survey techniques and employ rigorous quality control measures during analysis.