My SLW bantam rooster, nearly 6 months old, is doing something strange in the mornings, his leg seems to be bothering him, as if he's trying frantically to shake something off it, it makes him bash into things. Also his poo is yellow and runny. He lives with another rooster and three pullets, i feed them all on grower pellets with a side of oyster shell for the girls. They've been on medicated (ACS) food until about a week ago, now they are on non - medicated. Their coop has a good sprinkling of diatamatious earth. The other four chickens are all fine. I have a video but looks like i can only attach photos unfortunately.