My flock finished the antibiotics a few weeks ago. I now have at least 2-3 more birds sneezing/coughing and also the two original birds still coughing. What to do? Their combs are turning pink. They are only 7-8 months old. Quit laying soon after they started. When being sick, Do they ever lay again? I would hate to have to cull the sick ones. The 2-3 birds now sick are the new ones I just bought from auction. CRD sucks.