I have a 1 year old Silkie hen who has been lethargic for over a week. She stays away from the flock fluffed up with her head under her wing. She has had a poopy butt but her vent area looks clean and normal. Ihave checked for mites/lice and found none. Her poop is loose but not diarrhea. I went ahead and dewormed her with Safeguard 2 days ago and have her isolated. She eats a little and is drinking water that has electrolytes as well as probiotics. She has not laid an egg since her last hatch approximately 4 months ago. She is very thin and I do not feel any lumps in her that might be an egg. I just don't know what is going on. Any ideas and suggestions would be greatly appreciated. I have attached photos of vent area as well as photo of feathers in case someone see's something I missed. Thanks for any help or suggestions.