My hen is acting very lethargic. She went out to free range, but she was sleeping in the veggie garden. I brought out some FF which is a huge treat to the girls. She didn't eat any, even when I scooped some out and laid it at her feet. She's super puffed out and barely made an attempt to get away when I reached to check her out. She laid a perfect egg just a few hours before I noticed the problem. Her eyes, ears and nose look fine. Legs, feet and feathers are clean and injury/parasite free. I haven't noticed any worms in anyone's stool. Her crop doesn't feel empty, but not full either. Is there anything else I should be looking for? She's mid a light molt. Would this cause lethargy?