I have a pair of Ring necked pheasant and one Silver pheasant of age about two years now. Last year they lay eggs and I hatched that eggs in a incubator. Chicks hatched well and healthy. But as they grown there legs gone turned out day by day, lastly they all died within one to two months .Now this year they are again ready to breed. Any body kindly tell me whats problem is with them ?, is there any treatment is available ?