Bottle rockets.
My boss lives on the lake. Couple years ago an osprey nested on his chimney and nothing he could do about it legally.
The next year when the osprey came back to make a new nest, he worked from home for a week, watching the osprey and when it would approach his chimney, bottle rockets. It eventually nested on his neighbors house, but was no longer his problem. I remember being on a Teams call with him and he saying “i’ll be right back” and then hearing bottle rockets screaming as they took flight!