Noise cannons, netting deployed by Toronto's transit agency to thwart swarm of seagulls
![Leslie Barns seagulls 1 Leslie Barns seagulls 1](https://i.cbc.ca/1.7144631.1710462193!/fileImage/httpImage/image.jpg_gen/derivatives/16x9_620/leslie-barns-seagulls-1.jpg)
After a Toronto Transit Commission facility was swarmed by seagulls this spring, noise cannons and netting successfully kept the birds from nesting on its green roof, a spokesperson said.