About 6 weeks ago one of my pet roosters was diagnosed with pnemonia. He was given cefazolin sodium injections and recovered. Now another of my pet roosters is hanging his head and exhibiting similar symptoms. I have medication left in the fridge still and I was wondering would it be safe to administer to him and put him on the same regim as the other was on? I cant afford to take him to the vet, and he is 7 years old. Would this do him harm or help him? He is a much loved pet and I am afraid to just administer an antibiotic without taking him to the vet first, but his symptoms are so similar to the other. Is there anyone out there who knows about these things?