Pigeons on my balcony in Geneva

In July I was a few days in Geneva. I am away so much that on my balcony pigeons have started nesting, with a couple of fragile eggs just behind my kitchen door. A friend said to throw the eggs on the street because if I let these urban pigeons have it their way, I would end up with years of returning parents and their offspring and tons of hard to remove pigeon shit. Mother pigeon however was loyally staying on or near her eggs looking at me with her tiny red eyes full of motherly love. I decided to let them in peace. I would be away most of the summer anyway and I even feel sorry that I will not be there to witness the young getting flying lessons and leaving home.....