Hi! I got 3 of these yellow chicks out of the pullet bin at TSC. Also got some brown leghorns and Jersey giants. They are 3 weeks old. The yellow chicks have brown feathers coming in. Any one have an idea what they are? I thought they might be buff orpingtons? I still have so much to learn. I'll be posting pics once my leghorns and giants are older to see if anyone can tell me if they are hens or roos because I have no clue!