Okay, that title sucked, but here is my situation. Someone gave me three chickens, they are a few months old. I noticed that one had a really poopy butt, but I took him anyway and just planned to keep them away from the rest of my flock for awhile. Well I washed of the poopy butt bird then noticed a rather normal poop, with a bloody streak in it. I figure it is cocci, so I got some sulfadimethoxine soluble powder. I know from goats that you want to make sure that they are getting enough, so my question is for three birds how much is that going to be? I mean I have a small waterer, but with only three young birds they don't drink that much in a day? It says on the package to dose at .05%, does that mean that they don't need to drink all the water as long as I keep the water they have available to them dosed at a concentration of .05%? Then how do I do that?