We just had to get rid of a beautiful Plymouth Rock Barred rooster (to a friend who has a farm). Loved him, truly. An amazing disposition. Protected his ladies and didn't mind anyone picking him up, holding him, and petting him. The problem was that he crowed all the time... from dawn to 10pm... loud. We're in a suburb. While the neighbors didn't say anything, as we're friends with all of them... we knew he was a nuisance. Ordinances allow two birds. We had six counting him, as the borough manager said it isn't a problem as long as the neighbors don't care. So, he had to go, before anyone complained and all the ladies had to go. FWIW, all the birds were fed well, secure, and happy, in a decent-sized coop. There wasn't any reason for him to crow other than to show his dominance and make sure his ladies knew he was there. I think he just liked the sound of his crow. Lol.
Our quietest by far is an Ameraucana hen. She doesn't make a noise. Just coos. A great little bird, although skittish. The second quietest and nicest by far is our Black Moran... only makesow clucking sounds for treats and when she wants to be picked up or let out of the coop.