I've got a shipment of chicks coming in soon and I'm going to be keeping records on each individual bird to make sure I only keep the best for breeding purposes. I have 20 pullets (10 each of Buff Orpington and Black Australorp) and 10 cockerels (5 each of the same breeds) coming. At adult age, they'll be about a size 11, yes? Maybe 12 for the roosters? Since I'm wanting to start keeping records near immediately is there any way to do the bandettes from a young age? I assume I can just get smaller bandettes and switch them out with the larger sizes as they grow. Has anyone done this before? I just need help knowing which size to start with. I understand if there aren't bandettes to fit them while only days/weeks old but I would like to keep records on them starting at one month old, at least.