Which method can discourage geese and ducks from inhabiting a water body?

Using bird repellent tape is an effective method to discourage geese and ducks from inhabiting a water body because this tape typically contains visual and tactile stimuli that are unpleasant to birds. The reflective surfaces and physical properties can deter birds from landing or nesting in the area, thereby reducing their presence. This strategy is particularly useful in environments where more aggressive measures may not be practical or permissible, as it does not involve harm to the birds.

Building barriers around the pond, although a valid approach, doesn't always account for the ability of waterfowl to fly over these structures. Similarly, providing more nesting sites would likely attract more waterfowl rather than deter them. Feeding them at a distance can inadvertently reinforce their habit of returning, as they associate the area with food resources. Therefore, the use of bird repellent tape stands out as a targeted and non-invasive method to manage waterfowl populations effectively.