Calgary birders worried about the future calgary.ctvnews.ca - get the latest breaking news, showbiz & celebrity photos, sport news & rumours, viral videos and top stories from calgary.ctvnews.ca Daily Mail and Mail on Sunday newspapers.
For one week in late September or early October each year, a global network of volunteers searches urban areas for suspected bird-building collisions. This year's push runs from Oct. 2-8 and aims to raise awareness on the severity of the conservation issue.