Shad flies descend on North Bay
The swarming lasts between two and three weeks each summer.
As Chris Dawson reports, shad flies blanket the waterfront and other parts of the city for two or three weeks each summer, covering lights and signs when they emerge from Lake Nipissing at night.
They are so numerous, city crews deploy street sweepers to clear the throng of bugs off the streets and sidewalks. Some city businesses turn off their store lights and illuminated signs at night to avoid attracting the shad flies.
By day, some use leaf blowers or vacuum cleaners to get rid of them.
The flip-side to the swarm is that the shad flies' sheer numbers are a sign the lake is healthy.