To effectively control abundant birds near an airport, what action should be taken?

Draining nearby bodies of water is effective in controlling bird populations near an airport because many bird species are attracted to areas with abundant food and water resources. Bodies of water can serve as feeding grounds and habitat, potentially increasing the risk of bird strikes with aircraft. By reducing or eliminating these water bodies, the habitat and food availability for these birds decreases, thereby minimizing their presence in the area surrounding the airport.

In contrast, planting more food sources or increasing vegetation could attract more birds, while building additional roosting trees would provide more perching locations, likely increasing the bird population and posing a greater risk to aviation safety.