Good ways to eliminate blackbirds include installing bird netting, making bird food taste bad and playing electronically recorded predator sounds. Using a combination of visual, taste and auditory deterrents is the most effective way to eliminate blackbirds.
Installing bird netting is an effective way to protect small crops from blackbirds and is completely effective when properly installed. Spraying crops with taste aversion liquids or fogging agents works best in orchards and vineyards, and this also protects produce such as grapes, cherries and berries. Installing visual deterrents such as balloons, brightly colored tape and owl decoys also deters blackbirds when installed in open areas on the property.