We have just inherited 2 Serama chicks that I am guessing are 4-6 weeks old. I think I may have two roosters but am not sure. My question is if they can share a coop with full size chickens. We don't own any other birds but I quite like these little guys but their eggs (provided they are NOT roos ) will be pretty tiny! Could a Serama mate with a fill size chicken? I am new to birds. I am used to four legged creatures! THanks for any words of wisdom.