My RIR is 20 weeks old and decided it was finally time to crow yesterday. Apparently he needs to flap his wings about 10 times before he gets off this noise that sounds like he swallowed a Canadian Goose. Then when he is done he lets out one more noise that sounds like a belch. It goes something like HOoONNNNnnnKKKK! ERP! Not to be outdone one of my 12 week Millies now sounds like a strangled cat and then one of the 5 week old frizzle cochins crowed (high pitched neigh) I'm still trying ot figure out the whole wing flapping thing - none of the other roosters do it.