Prince Albert Airport is a Certified Airport, that is required by Transport Canada to have a Wildlife Management Plan. This includes use of Scare Cannons to control geese and ducks.
To be effective the cannons need be activated for at least 2 hours in the morning and 2 hours in the evening. We change the timers every Monday to start 30 minutes before sunrise turning off 2 hours later and starting 1.5 hours before sunset turning off 30 minutes past sunset.
These times are the typical behavior for geese to move from roost (water) to feeding (fields, including airfields). To be effective for preventing geese being at the airport we have to habitually train (scare) them to avoid the airport when they are most inclined to fly over and land in the field.
Spring migration at YPA usually starts in early April ending late May, starting again in early September ending late October. Cannons will remain in used every day during these periods or when the migratory activity has stopped. We do have a few resident birds that nest nearby so cannon activity may also happen at other time in the summer.
The airport never closes and is frequently used for medevac flights so the canons are active throughout the weekends and beyond when people see the bulk of aircraft activity.
On occasion if the cannon battery gets low it can affect the timer and fire out of the set times.