Forget what the so-called “experts” told you. These are true facts.
In Canada, seagulls are protected by the Federal Migratory Bird Treaty Act. Environment Canada with the help of Wildlife Conservation Canada.
Seagulls are not affected by ultrasonic devices
Seagulls are not affected by microwaves
Seagulls look real and unaffected by fake owls
The pressurized air from the nozzle has no effect on seagulls
Seagulls are affected by:
Noise:
Seagulls have been affected by Prussian cannons for a very limited time. They just need to realize that this will have no impact on them, leave concussion and re camp.
Microphone:
In the case of absolute failure, the US Air Force conducted extensive tests to protect the runway. The only success is LRAD or remote audio equipment. This applies only to runways. Because the runway is straight and long.
LRAD:
The glass of some buildings may break, so it is difficult to use in cities. You can’t habitually bring this device from the ground to the roof. Because it’s over 200 pounds. Use on the ground will not affect the birds on the roof. The bulk fee starts at $85000.
Fireworks:
All kinds of rockets flying from pistols or shotguns make huge explosions, explosions, sirens or stars. Some of them provide multiple functions.
Units are available in several sizes:
22 blank 50-200 feet range, average $0.50 per episode
9mm blank 100-200ft range, average $1.00 per round
No.12 Stoke 150-200 feet, average $1-2 per episode
CAPA 200 to 600 feet, averaging $15 to $25 per episode
40mm 800-1000 feet, average $20-35
Different methods have different effects and scopes. All of these can be successful in a short period of time(up to 1-2 weeks), so it is best to use them with raptors. The seagulls will get used to it in a few weeks. If the seagulls have built their nests, it will have no effect if they do not build nests or lay eggs. The more fireworks you use, the worse the effect. Traditionally used for seagulls, terns, sparrows and stingers.
Laser:
Use high-power laser to scare pests. The iris effect of hitting new snow is very good, but it requires a lot of technology and time. It doesn’t hurt birds. These lasers can only work in the dark(but some advanced lasers can work in the daytime, which is expensive). Laser can affect aircraft, which is illegal in some countries or some jurisdictions.
Pieces:
Dogs are important resources in airports, golf courses and on the ground, but they cannot be used on roofs. SPCA imposes several fines on building owners who want to use dogs on the roof, because it is inhumane and time limited to tie them with ropes when they are released, injured or fall down while chasing birds, and it is difficult to hoist the dogs to the side of the building, which is very dangerous.
Falcon:
It is good at preventing harmful birds from falling and nesting. This is a natural way to control and threaten the high success rate, humanized and harmful individual groups of birds. The disadvantage is that it is expensive, time-consuming, requires permission, the effect lasts for several days, and occurs repeatedly to ensure continuous success.
Guns/Shooting:
It is good at preventing harmful birds from falling and nesting. Disadvantages are the need for trained shooters(expensive) and multiple licenses. It may be impossible/illegal in your area. Observe frequently(from April 1 to May 30, and from sunrise to sunset, it takes 3-6 weeks until the seagulls decide to nest in other places and place archers on the roof). Finally, in most industries, it is a media nightmare visually.
