I don't see anything that screams "roo" at me. (No pointed hackles, no saddle, no crowing) If she is bokbokking in the morning, she MIGHT be too young to lay yet, but close...hence the red comb and wattles. Bokbokbokbok in the morning is usually the egg song in hens, and they will sing it before they start laying. It might be a Marans or a mix breed, but whatever she is, she is pretty!