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Proper
screening of soffits, vents, and other nesting areas will keep the
birds out. Pruning
trees to keep the canopy open discourages house sparrows from roosting.
Birdhouses for native birds should not have perches at the entrance
holes and purple martin birdhouses should be closed between September
and January.
Repellents such as tactile, sound, and ultrasonic devices have been
used successfully. Tactile repellents include wires,
sticky substances, and electrified wires that are placed around
roosts.
Traps, poisons, and shooting can be used to remove problem birds. The U.S. Fish and Wildlife Service does not regulate the
killing of this exotic species, but local laws may protect all birds,
native and exotic.
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