Getting back to basic problem, the vocalizations produced by the "chickens". I am not inclined to agree the level of vocalizations produced is normal even though it is typical of most chickens as kept.
My birds / flocks are kept under a variety of conditions. Some groups make a lot of racket, others are extremely quite when coming off roost and starting daily foraging. The latter extreme is likely closest to the real normal as predictably making lots of noise can promote too much attention by predators. My quite flocks roost in trees in smaller groups of mixed ages and sex. Bulk of sounds produced comes from rooster's crowing. Hens and juveniles make very little racket.
Question to ask is why are your birds making more racket than mine? How does your flocks makeup compare? What is different about your facilities?
My birds / flocks are kept under a variety of conditions. Some groups make a lot of racket, others are extremely quite when coming off roost and starting daily foraging. The latter extreme is likely closest to the real normal as predictably making lots of noise can promote too much attention by predators. My quite flocks roost in trees in smaller groups of mixed ages and sex. Bulk of sounds produced comes from rooster's crowing. Hens and juveniles make very little racket.
Question to ask is why are your birds making more racket than mine? How does your flocks makeup compare? What is different about your facilities?