I am fairly new to quail too. I had 14 straight run babies because finding mature females during the pandemic was next to impossible where I live. I live in a townhouse in the city so quiet is key. The babies started crowing about 5wks old. I have culled 6 so far by 10 weeks. I culled in batches based on how much noise they made. They can be fairly loud in the house. They are in my bedroom and I would wait until it was loud and constant and interfering with my sleep. Even with a strict lighting schedule and bedtime, I would still get 2am crowing because there were so many boys. I culled my first 2, things calmed down for about a week until the next alpha's rose to the top. The top 2 alpha's tend to try to one up eachother and it gets very loud. Then 2 more the following week. And then I culled one because he was overly aggressive and hurt one of the girls pretty badly. She is in a pen on her own right now to heal. I have 3 more boys right now but they haven't been loud or aggressive yet so they are getting a pass right now. The occasional crow and rustling when mating. I didn't have good luck with the boy/girl ratio with my chicks but luck of the draw. No way to tell at 1 week old. The girls are pretty silent. A little pig-like grunting noise and a small egg song are all I really notice. The most annoying thing is the clinking of the waterer when they drink. That being said, even when my boys were constantly crowing inside my house and driving me crazy, my neighbors I share a wall with couldn't hear them and could faintly hear outside in my backyard. Their calls blended into the natural bird calls outside. I think it would be different if I had a larger number or kept them outside, might get some complaints then.