I don't know what's wrong with my hen! She is a 6 month old silver laced Wyandotte and can't really walk or stand and can't lift her head! Every time she tries to lift her head it just falls back down limp. I went to the feed store and they said to give her nutri drench which I have given her twice today. Yesterday she was fine and running around like normal then when I saw her this morning I thought she was dead! Please help she is my baby and I'd hate to lose her!