By CBC News Ottawa, May 3, 2018
The C.D. Howe Building on Sparks Street has added new features to divert migratory birds from hitting its windows.
When it comes to buildings with large glass windows, birds are often unable to distinguish them from open air, resulting in injuries and deaths.
The C.D. Howe Building features tinted glass windows on two of its towers, which is enough to mark them as obstacles for birds, but the atrium in the middle has clear windows.http://www.cbc.ca/news/canada/ottawa/cd-howe-building-pspc-migratory-birds-1.4644824