I live in Mexico and have some very small chickens the locals call Costa Ricans. We have three chicks, about 3 weeks old. I noticed one is off by itsself and seems to have labored breathing. It also has bare shin showing in circles around its eyes. The other two seem fine. The chick was lively when I caught it and ran away when I let it go. I checked it's crop and the other end to see if it was plugged off outside of the eyes everything else seems fine. We don't have any vets here so we usually try herbal or other such remedies. We do have a in the next village. Thaanks for any help.