I know this is an old post, but I hope I can still get some responses. My vet said my rooster had giardia, and gave him two doses of fenbendazole and 7 days of metronidazole. He got better after the treatment was complete, but took a down turn after several days. He started to have running green poops again. The only thing he will eat are scratches. I have to force feed him some scrambled eggs and vitamins. I wonder whether I need to repeat fenbendazole for another three days or try corid for the diarrhea just in case the vet didn’t catch coccidiosis. He has been having diarrhea for almost a month now. Also, shall I give him scratches as much as he can eat? I haven’t offered a lot of scratches to him because I don’t want him to get tired of them and then stop eating them too.