Mammals

Bat detector

Within the Tollway region, the mammal species of concern are bats. We have been assessing bat populations within the Tollway corridor using:

acoustic monitoring
– bat roost tree surveys
– mist netting

 Projects:

I-90 post construction
I-294
– IL53-IL120 extension assessment
– IL Rt 390 extension
North Chicago Wetland Mitigation Site
Orland Grassland Restoration
Pine Dunes Restoration

UBAP Mammalogist Tara Hohoff also heads up the Illinois Bat Conservation Project.

Highlights from our work:

  • Four species of bats were able to be detected through acoustic monitoring at the North Chicago Wetland Site
  • We detected Big Brown, Eastern Red, Hoary, Silver-haired, Little Brown, Tricolored, and Evening Bats at the Orland Grassland sites and similar species composition between the Orland reference and restoration sites.
  • Detected Big Brown, Eastern Red, Hoary, Silver-haired, Little Brown, Evening, and Tricolored Bats at both Pine Dunes units