Please help if you can, We have never had a hatched chick have problems before, not sure what to do, This chick is just continuing to thrash on its back.... It can get its feet under it & just rolls & rolls, my temps & humidity have been fine, all other hatched eggs are fine although I seem to be having a very low hatch rate.... Currently on 10 have hatched on day 21, 40 in bator, still air with fan.... orp/ americauna/ BR's