How Can You Get Rid Of Grackles. If you would like to keep birds away from your house, cover all the indoor ventilation holes with a grid, hang thick fabric or net in apertures and seal the attic entrance. However may not be feasible for very large crops.
If you have a bird feeder with metal perches, gently tap the poles with a hammer. Block them from rafters or beams with bird netting or bird slope; Sound devices and ultrasonic devices.
Grackles are quick and alert to any perceived threats, so scare tactics can be highly effective.
Hang visual deterrents in trees and problem structures that attract grackles. For crops, scarecrows are typically the ideal deterrent. Because starlings are not protected in many areas, their nests and eggs can be removed and destroyed if desired. Sound devices and ultrasonic devices.