I just hatched 12 silkies today and the last 2 have problems. One chick just sits back on its butt with its legs out front and wobbles from side to side and cheeps almost constantly. I have tried standing it up correctly, but it just sits back down again. It's legs are not splayed. Can this be a hip problem? The other chick, just lays on its stomach , holds its wings out and also wobbles from side to side. I have given them water and poly vi sol drops several times today trying to build their strength. These are shipped eggs. How can I help them? Thanks for anyone who can help.