I have 13 Red Star pullets that are about 14 weeks old, as well as a few cochin bantams and a buff orphington that are grown. I've had the Red Stars since they were about 3 weeks old with absolutely NO problems! The Cochins and B.Orphington are newer members of the flock, but I did quarantine them before introducing them to my Red Star pullets. Two days ago I noticed a few of the pullets and one of my Cochins were sneezing and rubbing their beaks across the ground. I got some VetRx and put it in their water and on a couple of their heads and under wings. I haven't seen any discharge from nostrils or eyes. They aren't really acting lethargic or anything either. Is there anything else that I need to do or watch for?