Hello, I have 4 different breeds of chickens (two of each) I have raised them from day olds. They are approx. 24 weeks old. Only one chicken has started to lay (American Dominique) She is not even the the most mature looking of the bunch. My husband thinks they are all duds! Any thoughts, ANYONE! P.S. they do free range but we leave them in until late morning and let them out after the one lays her egg.