Birds, Bats, and Building Collisions

Posted by Bob Lefebvre

Window strikes, or birds colliding with windows, is a big problem – not just in residential yards, but in urban downtowns where tall glass structures are a big obstacle to migrating birds (and bats too). Many birds migrate at night, and skyscrapers can cause a lot of bird mortality. You may have seen some of the disturbing photos of hundreds of dead birds of many species that are collected in Toronto’s downtown every year by the Fatal Light Awareness Project (FLAP). A similar effort is undertaken in Ottawa by Safe Wings Ottawa.

Toronto, unlike Calgary, is located on a major migratory flyway. So how big is the problem here, and what can be done to minimize the damage? This is what Kathleen Johnson has set out to discover, by creating the Calgary Migratory Species Response Team.

Chipping Sparrow
A Chipping Sparrow found in downtown Calgary by Kathleen in the spring during one of her preliminary checks for birds killed by window strikes.

Kathleen has done an amazing job of assembling a team of experts and setting up a detailed and well-prepared group of volunteers to begin surveys of Calgary’s downtown. The CMSRT will plot the locations of all birds and bats found, to learn where the problem areas are. The Calgary Wildlife Rehabilitation Society is directly involved as well, so that any injured animals can be rescued.

CMSRT Poster

This weekend there will be a two-part orientation session for anyone wishing to volunteer. The first part will be an information and training session at the Central Library downtown, and the second part will be in the field (downtown) early Sunday morning. See the event on Facebook here.

Please visit the group’s Facebook page to learn more about this effort. You can also follow them on Twitter (@CalgaryResponse). If you want to volunteer, email them at calgaryresponse[at]gmail.com.

Tonight, August 22nd, Kathleen will give a brief overview of the project at the Birds & Beers event (6-9 pm, at the Legion at 9202 Horton Road SW) and will have more information available for anyone interested in getting involved. This is a really exciting initiative and I hope everyone can get behind it and help out!

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