Hi Yall! I had another thread and determined through it that the this chick is a roo. However as he grows his feathers are dramatically different than the other two. All are supposed to be white rocks. Is he? Also we got them from tsc and they are all sneezing. No other symptoms. I have 13 pullets from mcmurray coming next week. We had planned at 4 weeks to put them together. Now Im thinking we should hold off.If its something serious how long does it usually take for other symptoms to emerge? Thanks for any and all help. I have spent a small fortune to build a new coop and get ready for chickens and don't want to do something that will endanger my whole new flock.