As Jasperites rebuild and new windows are installed in reconstructed homes, now seems like an opportune time to have a conversation about bird-friendly windows.

Bird-window collisions happen when birds can’t distinguish between windows and the habitat those windows may be reflecting—trees or sky, for example. According to Birds Canada, collisions with windows in residential and commercial buildings kill on average more than 25 million birds in Canada each year, with the majority of collisions occurring at houses.

Humans have three cones in our eyes (retinas) that determine colour (red, green and blue respond to wavelengths). Birds, however, have a fourth cone which responds to ultraviolet light.

There are a number of ways to mark windows so birds can see them. One of these is with markings or etchings which reflect ultraviolet sunlight. The ultraviolet light is invisible to humans but glows like a stoplight for birds. These markings won’t eliminate bird-window collisions completely, but research shows it can lower fatalities by 95 per cent. There is a cost associated, but I suggest that it’s worth it…if you care.

Parks Canada has this information. While I don’t expect Parks to enforce bird-friendly window installation as they issue building permits, I do think it’s important to make Jasperites aware that as they rebuild, there is an opportunity to become part of the solution. You can find more information about bird-friendly window solutions at Birds Canada’s website.

Happy birding

Gord Ruddy, Jasper

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