I have 6 chickens, 2 RIR, 2 Barred Rocks, 1 Black Australorp, and 1 Americana and they are all 19 weeks old. In the last 72 hours they have become VERY, VERY loud. It starts with a deep rrrrrrrrr sound, which gets louder and then squawking, which is even louder. They have not laid their first eggs, yet. The combs on one red and one rock (the noisiest of the group) have become very red, in the past week. Is this a sign they are close to laying? Will they quiet down once they start laying, except for the post egg song? Or is this just them being chickens? I picked the breed because they were billed as "quiet". I live on a smaller lot in a residential neighborhood and don't want them to upset my neighbors. And I can't keep the peace, yet, with eggs, because they haven't started laying. Please help!