* Make loud noises. Cockatoos are easily startled, so making a loud noise can be an effective way to scare them away. You can clap your hands, bang pots and pans, or use a noisemaker such as an air horn or fog horn.
* Throw objects at them. Throwing objects at cockatoos can also be an effective way to scare them away. However, be careful not to throw anything that could hurt the birds. You can throw rocks, sticks, or other objects that are not sharp or heavy.
* Use water. Cockatoos don't like water, so spraying them with a hose or water gun can be an effective way to scare them away. You can also place sprinklers or water balloons in areas where the birds are likely to land.
* Use predators. If you have a pet dog or cat, you can let them outside to scare away cockatoos. Birds of prey, such as hawks and eagles, are also natural predators of cockatoos. If you can attract these birds to your property, they may help to keep the cockatoos away.
* Use deterrents. There are a number of commercial products available that are designed to deter cockatoos. These products typically contain ingredients that are unpleasant to the birds, such as capsaicin or methyl anthranilate. You can apply these products to your property to help keep the cockatoos away.
It is important to note that cockatoos are protected by law, so it is important to use humane methods to scare them away. If you are having problems with cockatoos, you can contact your local wildlife agency for assistance.