Each year in Canada, it’s estimated that around 25 million migratory birds die as a direct result of collisions with buildings. Experts only expect that number to grow unless we all work together to help mitigate local biodiversity loss through urban development that considers wildlife species.
During the day, reflected light poses a severe threat to birds. Birds can see through glass and what is reflected on glass, but they cannot see the glass itself. Attracted to the reflection of a landscape that is actually behind them, or to a plant that is on the other side of a window, many birds fly straight into windows and reflective building exteriors.
Unintentional vehicle collisions with bird nests are also a cause of mortality for birds.
Fatal Light Awareness Program (FLAP) Canada is a registered Canadian charity widely recognized as the pre-eminent authority on the bird-building collision issue. They offer many tips for reducing bird collisions, including applying visual markers to or in front of glass to help make windows visible to birds.
Residents can contribute to research on window collisions by using the Global Bird Collision Mapper, a web app for reporting and viewing the locations of bird collisions with buildings across the globe.