One of my 5-week old cornish cross hens has a STRANGE sudden problem - her head extends out from her body at a weird angle, to one side. (If 12 o'clock is where her head should be pointing, it's at about 2 o'clock now!) She is still walking around. No outward signs of injury. I plan to cull her today in case she is suffering, but geez, I want to know what the heck happened to her!!! Has anyone ever seen anything like this?