I have a silkie hen about 7 months old. She has always been quiet, but recently I have noticed she is bumping into things, which made me think she has problems with her eyes. I also noticed she struggles to walk sometimes. Today she started walking in circles, she was pecking at the feeder but not actually picking up any food. Can anyone help me figure out what is wrong. Is it a lack of vitamins, an eye problem or ears (balance). I don't know what to do.