One of my three week old cornish cross chicks has what appears to be splayed legs, and I'm embarrassed to say I don't know if she had it when she arrived. That being said, I split an order of 26 with a girl and she only has 6 left. She said hers gradually stopped being able to stand, then walk, and then died. So, I'm not ruling out a vitamin deficiency. I have polyvisol drops on hand am wondering the dose for one gallon of water? Thanks!