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Markers on glass act like a stop sign to let birds know where it isn’t safe to fly © Brendon Samuels
As many as 42 million birds are killed in Canada each year by colliding with glass on buildings. Birds do not understand reflections and fail to detect glass that appears transparent. Collisions can happen anywhere where birds encounter glass windows, balcony railings or transportation shelters, and represent a leading source of bird deaths in the ...