After several years of wanting to keep chickens but refraining because it was illegal where I lived, I JUST bought a house in a near suburb of Chicago. There was nothing in the animals section of the municipal code prohibiting poultry, so I thought I was in the clear. Guess I should have searched the entire municipal code! Apparently, the prohibition is listed in the usages section of the zoning ordinances.
I have waited ALL this while to keep chickens, I told my daughter we could finally do it because it was legal here and, by golly, we're going to buy three barred rock chicks next week at the urban feed store (15 minutes from our house).
The city has a lot of problems with gangs, rats and rats in gangs so they have better things to do than go after weird garden ladies with chickens (I hope). The neighbors are nice, so hopefully some fresh eggs and conscientious poultry practices will keep everyone happily minding their own beeswax (the beehive starts up next spring, but that's another subject!).
Well...I guess I'll be building that coop in the garage, after all.