xxx: in the city above the building near one of the fountains fixed a big bird layout and periodically lose the sounds of predatory birds - to drive the pigeons either from the fountain or from the building.
YYY: Well, I think the predator will be removed.
But these pigeons have not seen the predator in life and have no idea what sounds he makes, so with curiosity fly closer to the bird layout and without seeing anything interesting they go to the fountain. Interesting spectacle, but the chance of being covered near the fountain increased twice.