Ahhhh, It's spring.
I'm on the top (6th) floor of an apartment building that has an open balcony with a beautiful view… that I recently share with some pigeons.
I would much rather the pigeons choose another balcony to admire the view. I do not want to hurt them in any way (other than to deny them free rent at my expense.) They do leave payment in the form of a pile of fertilizer right where they normally sit in nice weather.
I have three cats that are glued to the window watching our guests enjoy themselves. If I open the door, I'm afraid one of my cats will launch itself into free space attempting to catch one of the mild-tempered "Rock doves."
The pigeons seem to sense this and tease the cats by parading in front of the window. It was funny — for a while. Not now.
Shoo-ing them away is a temporary fix as they return soon. Things that move such as a wind chime and a flag don't seem to bother my unwanted guests, either. It's a quiet neighbourhood - noise is not an option that I can imagine.
As the weather gets warmer, I'd like to use the balcony without having to recover the gift guano left for me every day. Yuk!
Question: What can I do to "encourage" them to find another spot to sit?