1) What type of bird , age and weight. Cornish crosses 6 weeks old. 2) What is the behavior, exactly. I've noticed several of them having light sneezes, and weird "teeth grinding" noise when they breathe. 3) How long has the bird been exhibiting symptoms? Two days + 4) Are other birds exhibiting the same symptoms? A couple of them yes. Only the cornish, no other chickens with them exhibiting symptoms. 5) Is there any bleeding, injury, broken bones or other sign of trauma. No 6) What happened, if anything that you know of, that may have caused the situation. No 7) What has the bird been eating and drinking, if at all. Yes everything is normal. 8) How does the poop look? Normal? Bloody? Runny? etc. One has diarrhea, but I attributed it to the change in diet 2 days ago. Everyone else fine. 9) What has been the treatment you have administered so far? Nothing 10 ) What is your intent as far as treatment? For example, do you want to treat completely yourself, or do you need help in stabilizing the bird til you can get to a vet? Self 11) If you have a picture of the wound or condition, please post it. It may help. N/A 12) Describe the housing/bedding in use. Baby coop at night, out in yard during the day. Straw in coop. Everyone seems healthy, no discharge, regular normal breathing, eyes bright and clear, combs and wattles normal coloring, normal activity, everyone's poo is fine except one Cornish. About 4 out of the 6 cornish are giving an occasional sneeze, and what I can describe only as "teeth grinding noises" when they breathe. What should I do? Help please and thank you.