The Serama has a crow that's 1/3 to 1/5 the volume of the average rooster; if that helps any. -or did you want a large foul roo; if that's the case, I'm stumped. Also, Seramas can be housed indoors quite easily. They can also be, if you have the time, trained not to crow. Just every time they do, give him some sort of punishment. You'd have to be there to punish him EVERY time he crows for the first few days. Hope that helps. (I heard that tip from a friend. Don't hold me to it. Just a tip I thought might be worth your time to try.)
By the way, the person I got the tip from had Seramas.
By the way, the person I got the tip from had Seramas.