Yeah, if I did it I'd want the area to be fenced in because one of my neighbors is nosy. It's a 1/4 acre plot, so not exactly a huge amount of land.
I know that my neighbors down the street have chickens because I occasionally hear them, but their yard is completely fenced in. I only know them well enough for casual greetings when we see them in passing, and there's a language barrier preventing more in depth conversation.
They might not know that the rules exist at all -- you have to go looking to find them. I'm sure that they're getting away with it because nobody cares and the yard is fenced in and nobody sees the chickens and because none of their next door neighbors care.
I don't talk to them much besides "hello", as communication is difficult since they don't speak much English and I don't speak much (any) Swahili.
I know that my neighbors down the street have chickens because I occasionally hear them, but their yard is completely fenced in. I only know them well enough for casual greetings when we see them in passing, and there's a language barrier preventing more in depth conversation.