3 weeks ago I found a sick pigeon around my block and decided to try help him. He had and still has pigeon pox, and he is half blind because of it. I took him to a vet and found out he also has both wings broken. The problem is however that after a week he started having very watery poops and drinking more water. I was advised to give him metronidazole for canker, although I am not sure he has canker (no growths in the mouth). There were also suspicions of coccidiosis. I have given him metronidazole for 10 days now with no improvements and it feels to me his health is actually rather deteriorating. Meanwhile I found a medicine called BS that is supposed to treat both canker and coccidiosis (has rhonidazole and amprolium) but I do not know if it's safe to hit him with another antibiotic.