The poult is almost two weeks old. He's kept in a brooder with chicks and, until they discovered the water, two ducklings. He has no contact with the big chickens save what comes in on me or a fly. None of my other birds, neither chickens nor turkeys are showing signs of illness. I hatched this poult from my own stock. He was fine until Wed night. He started showing signs of poor coordination and sitting on his hocks. Now he's sitting on his hocks with his legs straight in the air and shaking. He's still complaining loudly, but doens't look good. He's kept on shavings in a plastic tub. He has non-medicated feed, Purina Flock Raiser and water with a bit of ACV. I've not noticed any bloody poo. The most noticeable factor is the sitting on hocks.