Hi. I'm new to raising chickens and have found this site to be a wealth of knowledge. I have 10 chicks now. We purchased 8 pullets and they are about 11-12 wks old. Now that they are getting older we are trying to determine if any of them are cockerels...so far we have a couple that show signs but not sure yet. Hoping we don't but if we do we will have to get rid of them. Our neighbors have 2 silkies but have decided not to do chickens so they have offered them to us. They are younger, not sure how much, maybe 2-3 wks younger. We are trying to integrate them as we speak. Today is day 2 of having them visit during the day. Yesterday didn't go so well with our buff brahma (we think it might be a cockerel). So we removed the brahma and they did okay with the others. Today we have kept the brahma out and they seem to be getting along. We have the following: (2) buff orpingtons (2) barred leghorns (1) Golden Spangled Hamburg (1) Buff Brahma (1) Welsummer (1) Speckled Sussex Plus the (2) silkies if they will integrate. One of those may be a cockerel too. I'm worried about the hamburg. He/She is extremely tiny, has green legs, and isn't as social as the others. How do you tell if it is a cockerel and should they be tiny, tiny? See pics below of each of them. Silkies Maybe a cockerel in the back Speckled Sussex Barred Leghorn Buff Brahma - Headshot and tail shot. Is this a cockerel or not?