So I go out to the coop today to check on my chickens. They are 17 weeks old. I hear this really loud BOK BOK! coming from one of them. Did it just finally find it's voice or does that mean something? Also, 2 of my SLW's have very red comb and waddles now, and 2 are very pale. Same with my red sex-links. Could they be getting read to lay?