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 it creates a visual deterrent that makes the area less appealing for these birds to frequent. The tape reflects light and creates movement, which can scare waterfowl away. This method is particularly useful in areas where geese and ducks may be roosting or feeding, as it alters the environment in a way that makes it less comfortable for them.

The other methods, while they may have their own merits in different contexts, are less effective for deterring waterfowl. Providing more nesting sites could inadvertently attract more geese and ducks rather than discourage them, as they may see the area as favorable for habitation. Feeding them at a distance can reinforce their presence and encourage them to stay in the area, potentially increasing their population rather than discouraging it. Building barriers around the pond might limit access for both waterfowl and other wildlife, but it may not solve the problem if birds can simply go around or over the barriers. Thus, the use of bird repellent tape stands out as a clear and focused method to deter these birds effectively.