My big sassy "top of the pecking order" hen was a little out of it yesterday. She hung back from the group while free ranging, was listless and puffed up. She obviously wasn't feeling well. Her comb and waddles look great- rich red, plump, very large with a nice subtle sheen. I did notice that her feet looked puffy! It was so odd! She looked the way a person does when retaining water around their ankles. Both of her feet were thicker (legs, ankles, and toes) and had tiny puffy "rolls"of skin scrunching up while she stood, which is unusual. I kept comparing her legs to the other chickens' to make sure I wasn't just seeing things- but nope! Her legs were swollen! I picked her up (which is also strange cause she's normally super independent) and she felt fat and healthy- no bones or squishy abdomen. Her legs didn't feel any different. She is starting to molt, but I've never seen a chicken with PMS (Pre-molt symptoms) (...just made that up). She looked back to her old self today. Any ideas on what happened or what might be wrong?