Death by Bird Shit?

Living in a turret has a drawback. There are these pigeons that hang out, year round, on the roof of the building and conveniently crap all over my 4th floor balcony. Previously this was just annoying, taking away from my desire to get a tan during the summer months and not being hit on the head with a bird pellet, but now I'm actually a bit on the worried side after having a conversation with a co-worker and watching House last night. It seems bird shit, especially pigeon, can cause cryptococcus spores that can be inhaled and eventually kill you. Ok, so not many people die each year from it, and most of them have severely weakened immune systems, but there's an outside chance that after breathing it in for a year I could be affected, right? We're talking about the girl who's been sick in nearly every country of the world she has visited and has had food poisoning multiple times ... if it could happen to anyone, it could happen to me.

So the question is, do I:

A) Buy a gun and kill the dumb-ass birds? (then I'd just have dead pigeons which are likely just as harmful to my health)
B) Ask the building managers to take care of them and run the risk of having them think I am the crazy lady in 4B?
C) Cover my balcony with chicken wire? (while Canadian flags are not allowed they never said anything about bird deterrents)
D) Ask my doctor if she has a herbal anti-cryptococcus remedy?
E) Move?

All are possibilties except for E, because not only is there a rental housing shortage in my mid-sized city, but I also really really like my apartment (apart from the bird shit). Maybe I should go consult some reference sources on the subject...