It's too young for saddle feathers to come in even if it was a rooster. Those come in at around 4-7 months with their adult feathers, after the final baby molt. Until than you go by comb, leg thickness and sometimes coloration.Yes same bird in all photos I have posted. It’s tail feathers don’t seem like rooster feathers? And what about the saddle feathers? And yes I’m sorry it is an olive egger!