You don't indicate which kind of quail you are thinking about raising. I have Bobwhites and my male crows pretty loud. But, you can search youtube for "coturnix quail crowing" or "bobwhite quail crowing" and you will get an idea. I think Coturnix quail are quieter than bobwhites, but I am only judging that based on youtube videos. I do not have Coturnix and I have never seen any in person. I have four Bobwhites inside my house, and they wake me up in the morning. If they were outside, they would definitely be loud enough for my neighbors to notice, which is one reason they are inside! But, I understand most municipalities do not have rules against keeping quail, so legally you should be allowed to have them unless your homeowner's association bans quail or all animals specifically you should be able to have Coturnix. Our neighborhood association bans all animals kept in cages outside. Can't even have a dog house. Be careful if you decided to do Bobwhites, their call is a higher pitch and potentially more irritating to neighbors, although I love the sounds my Bobwhites make!