I bought two buffs from a backyard breeder and I'm pretty sure now that one is a roo. His comb and wattles are larger than the other, he has less feathers (fuzzy back while his sister is feathered). I just wanted a confirmation. The crazy thing is that he LOVES attention and is gentle, but the sister is aggressive towards him and the other chicks (silkies). What do you all think? Oh-they were hatched about October 8th which would make them about 5 weeks old. The one we think is a roo: his sister: Thanks!