I have been losing a battle against pigeons for a long time now. For whatever reason, there are a number of pigeons that are attracted to my building - and they constantly try to get into my balcony. I have tried numerous measures to keep them out including netting, spikes, fake birds, and reflective surfaces - nothing seems to work in the long run.
My balcony has two main openings—one larger one (119cm wide, 272cm high) and one smaller one (32cm wide, 272cm high), both with a fence/balustrade about 105cm high. See the attached pictures.
I need some advice on how to permanently keep them out while also retaining the breeze that comes through the balcony. Unfortunately, I can't install hooks or anything to the outer wall of the building as this needs strata approval.



Any advice or guidance would be much appreciated as I am at my wit's end!