Pigeons get a bad time, but they're lovely birds of you spend some time observing and maybe even interacting with them. We had an obviously-paired couple visit our balcony most days for a couple of years.
Please don't be (thoughtlessly?) mean to them.
And the first pair of baby pigeons we sheltered was the last pair of baby pigeons we will be sheltering. The mess was indescribable and everyone was so comfortable they all wanted to raise families here. Horrified, I chased pigeons from our balcony during mating season (circa any time it's warm outside) multiple times a day for three years before I regained control of my tiny kingdom.
Pigeons have the whole outdoors to nest in, the city even maintains a pigeon house on top of a building just across the way. I have my balcony...