Thanks rjohns and Parront

So even if the roosters never get to crowing age, will the pullets make noise like my hens do? Sometimes I think my hens are a little loud, but I think that is probably because they are laying. I only raise chicks once a year and I keep them with my older hens so I really just can't remember how noisy 6-week old birds are. I'd love it if my neighbors never even knew... since I am legally only allowed 10 birds lol...
I guess I don't even need to worry about roosting then. rjohns, do you think I'd even need a pen if I kept them in a roughly 8x15 foot shady (and weedy) side yard? Maybe 20 of them?