Is Dolly a Rooster??? Dolly is the RIR in front Dolly learns to roost before her sister but gets her shoulder feathers much later See her sister? (the RIR, not the BO or EE) Here's Dolly at 1 month Dolly at 6 1/2 weeks Her sister Loretta at 6 1/2 weeks with Dolly in foreground.