[Spktyr]

All birds do is crap on my car, attack my neighbors, and carry far more diseases than my cat ever could.

If anything, start killing the birds.

[Plateau]

Sorry, but all feral cats must exit to that great kitty litter box in the sky!
Meeeeowww! Pow Pow Pow! Tweet Tweet Tweet!

[lormand]

"All birds do is crap on my car, attack my neighbors, and carry far more diseases than my cat ever could."

Do you live in a poultry farm in Malasia?

Crap on your car?
I park in a garage, but hey, I'm weird I guess

Attack your neighbors?
Why don't they attack you? If my cats attacked my neighbor's birds and not mine, then I probably wouldn't have a problem with them. What kind of birds specifically attack humans? Do the attacks leave scars, wounds or even death? Call your local news media, this is a story that needs to be told.

Diseases?
Are you a veterinarian? How many diseases can a cat carry, and how many diseases can a bird carry?

< /sarcasm >