Window strikes kill an estimated 16–42 million birds annually in Canada. Bird strike monitoring can help identify high-risk areas for mitigation in Squamish and increase global understanding of where and to what extent collisions are happening. Our informal Bird Strike Monitoring program uses the Global Bird Collision Mapper to submit data to a global database.
When:
This year-round, on-your-own activity can be done either as a dedicated initiative, or as and when you have time while on your regular walks. Collisions are most frequent during spring or fall migration but can happen at any time of year.
Who:
Anyone can participate, individually, with friends or family.
Where:
Most bird-glass collisions occur at low-rise buildings and family homes (1-3 stories). The highest-risk zones are windows and glass railings that reflect nearby tress, shrubs, or open sky. Buildings adjacent to parks, rivers, or feeders are especially dangerous, as these attract higher concentrations of foraging and migrating birds.
What is involved?
Download the Global Bird Collision Mapper app. Check high-risk areas in your neighbourhood.
- Reflection Zones: Windows that mirror surrounding vegetation or sky confuse birds, causing them to perceive the glass as a continuation of their natural habitat.
- “Flyway” Areas: Glass structures like breezeways, transparent deck railings, or opposing windows that line up directly to create the illusion of a clear, open path.
- Bird Attractants: Windows placed within 5 to 10 meters of bird feeders, bird baths, or dense ornamental fruit and berry trees, which naturally draw birds into the building’s immediate vicinity.
- Ground-to-Tree Height: Most strikes happen at or below the height of the tallest nearby tree (usually ground level up to the 4th floor), as this is where songbirds spend the majority of their time foragingReflective exterior glass facing landscaping or trees
If you find a bird, open the app and follow the prompts to submit your sighting.
More Info:
- More information about the Global Bird Collision Mapper
- Instructions for downloading and using the app
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