Is it possible to make birds confused by repeating recorded chirping or singing? Or do they always perceive them as usual, even if the situation is clearly not as described by those sounds?
- mating song when there's no mate
- danger/alarm cries when nothing's going on
Specifically, I'm interested in public placed with a lot of traffic using looping speakers to scare off birds that like to dump upon almost unsuspecting citizens. Like underground entrances and city malls. Does the effectiveness decrease over time because of that?