I got 7 six week old chicks and 2 eight week old chicks (approx), one of the younger ones got sick more than two weeks ago and had to go in quarantine but now is recovered after antibiotic treatment. I've decided to put him back in the flock because whatever he had the others probably have it too since they grew up together for at least 4 weeks. I tried reintroduction, but it went badly, he tried to dominate all his siblings of the same age but the older chicks grabbed by his neck, and he was screaming very badly, and every time I try to put him back in the flock outside he runs back to me and my dogs. when I put him in the pen with others he flew out (didn't even know he could fly that high!) towards me. He's gotten very attached to me and wants to be with me all the time, he follows me everywhere in the house and sleeps on my chest. I'm not sure what to do. Suggestions? (I say he because of the behavior and upright stature but could be a hen, it's a silkie mix so very difficult to tell)