I have a 22-24 week old silkie who is acting very lethargic. She is standing up, but she moves only slightly and makes very soft noises--no loud squawks or clucks. She has a scrappy appearance (feathers very rough looking, but she looked like this before I got her--not sure if this is normal or a symptom of something; as far as I know she has not been losing feathers). She is also standing in a "scrunched up" position. I don't know how else to describe it. Her neck is contracted, and it's as if her shoulders are tensed. Her tail feathers are pointed downwards. As far as I can tell, she does not have diarrhea. I am feeding all the hens a pretty standard layer pellet and make sure they have fresh water at least a couple times a day. Any help would be greatly appreciated. I'm new to chickens and am really not sure what I'm looking at here. Thank you!