He has pointed saddle feathers and the typical brick-red shoulder markings of an Easter-egger rooster. Saddle feathers show up at the base of the tail typically between 12 and 14 weeks old, though I had a young man whose saddles showed up at 7 weeks or so this year. Those feathers are a guarantee of a rooster, though, because hens will not get those feathers, especially young hens. Here is my boy at 12 weeks old. See the pointed feathers at the base of his tail? (As a side note, he does not have the red shoulder patches that most EE boys get, but he is still very much a boy. No pullet would ever have the red shoulder pattern of that person's bird, though.) If you can, post a picture. I'd be glad to help you determine whether you have pullets or not.