I'm just starting a small chicken buisness and everything has been going well I have my layer flock and then I have a 2-3 month (Depending on breed) rotation of meat birds but I made the mistake of buying 5 RIR(Straight Run), 5 Red Rangers(Straight run) and 5 Red Productions(Pullets) in my mix just to play around and see what I could do with them. I wanted to keep my 5 RIR birds for my Flock and the other 10 for meat birds the only thing is I didn't marked them with zip ties or anything to tell them apart well now they are about 7 weeks old and they all look the same. Except one set is really dark red, one set is extremely bigger then the rest and the other 5 are just average size but a lighter color in other words I need a way on how to tell all of them apart so I can mark them off and know who is who