Countermeasure Percentage of Airports
Using Each Countermeasure
Yes
(%)
No
(%)
Don’t Know
(%)
Use of Active Non-Lethal Control Methods
Noise harassment 65.7a 34.3 0
Erecting non electric fencing 48.6 51.4 0
Light harassment 42.9 54.3 2.9
Nest removal 34.3 65.7 0
Live trapping 22.9 74.3 2.9
Chemical repellents on vegetation 18.2 81.8 0
Dogs 17.1 82.9 0
Chemicals on perching, nesting or roosting areas 11.4 88.6 0
Adding additional buried apron fencing 2.9 94.3 2.9
Erecting electric fencing 2.9 97.1a 0
Use of Active Lethal Control Methods
Sharp shooting 54.3a 45.7 0
Poisoning 40.0 57.1 2.9
Trapping 22.9 77.1 0
Falconry 2.9 97.1a,b 0
Use of Passive Control Methods
Maintaining long grass 68.6a 28.6 2.9
Removing shrubs, brush or diverse habitat 54.3a 42.9 2.9
Managing waste products 42.9 57.1 0
Removal of perching, nesting or roosting areasb 41.2 57.1 0
Draining water accumulations 37.1 60.0 2.9
Removing entry points to buildings 25.7 65.7 8.6
Sweeping runways for worms 25.7 68.9 5.7
Influencing agricultural practices within 8 km 22.9 77.1 0
Restricting access to water
(grates, wire grids etc)
22.9 74.3 2.9
Preventing visible run offb 20.6 73.5 5.9
Influencing landfill practices within 8 km 17.1 82.9 0
Influencing water management within 8 kmb 5.9 88.2 2.9
Planting unpalatable vegetationb 5.9 94.1 0
Placing grates over streams or ponds 2.9 97.1a 0