Over the holiday and weekend, my silkie rooster became very ill and started having horrible diarrhea. When I was finally able to get him to the vet on Monday, they said it appeared to be coccidia. Then told me he probably wouldn't even make it through the day, even with meds and IV, so we had to put him down. The testing afterwards showed coccidia. My concern now is with my 15 other chickens. I know they need to be treated because they all share the same area. My vet gave me orders to buy medicated chick feed and provide it to the others. I have not seen any other suggestions to do this so I am now 2nd guessing my vet. The feed says for young chicks and all of my are older than 4 months? Which is the recommended age on the bag. I know it does have the active ingredient but I don't know if its enough to stop an outbreak... I know coccidia kills fast and I don't want to waste time or money on a method that won't work. Should I just buy corid (because I did my research right away!) or stick with what my vet recommended?