Earlier quoted context omitted.
> I'm pretty sure this is against zoning. Perhaps, but you might be surprised. Years ago I kept chickens and checked the zoning here (suburbs of Phoenix). No problem with a flock of hens. Roosters have restrictions. Many places are similar.
It's almost certainly about being a nuisance to your neighbors. Roosters crow super obnoxiously. Like.. wow. If you've ever tried to sleep with one nearby you know what I'm talking about. Just handle that edge case (e.g. don't keep a rooster around) and NO ONE will care if you have chickens that don't bother anyone :) Especially if you're into sharing the eggs!
Where do you think a lot of the chicken you may eat comes from?