Very new to the chicken world but incredibly fascinated with their behavior and could watch them for hours. I have 5 four to five week old Cochins in a brooder with a couple 1 week Seramas, one 2 week modern game, and one 4 week silkie. Last night I noticed 3 of the chicks jumping on one another, chest bumping, and they are also the friendliest and most curious of me and my camera. Tonight I decided to pick all the chicks up carefully, study their beaks, emerging comes, and low and behold waddles on some of them! I also studied their feathers, comparing everyone. Well the very 3 most excitable chest bumpers all have a 2 mm much more developed comb than the others....then I found the waddles too! ****....why did they have to be the friendliest and most interesting personalities? I have minimal experience but it really feels like these are cockerels based on all this. I could post pics tomorrow if I can catch them but I would think that the evidence pointing towards boys seems rather strong already. Anyone else willing to share their cockeral versus pullet personalities/characteristics. I feel like documenting everything to learn from...so interesting.