Any ideas on what could cause a healthy 8 week old chick to have sudden problems? The chick was healthy Saturday morning then started holding one eye partially shut. Thought at first it might be a grass issue, or maybe a peck from another chick but there is no discernable injury, no redness, no swelling, no discharge. Now the chick is having a foot issue which started getting worse. Right toes are curled back and the chick does not want ot put weight on it. No redness or swelling at this point. Are the two related? Any ideas on what it could be? Anything else to watch for? BTW - this chick was vaccinated for Mareks within a day of hatch and is also from a NPIP/AI clean flock. All of the other chicks in this group are perfectly fine. I'm perplexed.