My 1 year old Buff Orphington was displaying some weird behaviors, she is sitting off by herself from my other 3 chickens. She still moves around the yard At one point I watched her for a good twenty minutes standing in one corner closing and opening her eyes and her head would fall like she was falling asleep and then she'd pick it back up again, her tail would do the same thing slowly droop then perk up. She also is not as feisty about getting treats as she normal is, she still goes for it but only half heartedly. Her crop is empty so I know she isn't eating but she's still alert and feisty her vent is clean and moist alittle poop resiadue that might have been runny, no weird poops in the yard or coop, her comb and wattle area is a bit pale (after I gave her some suger water it turned bright red). I couldn't feel anything in her bottom. So I have no clue what is going on! The only thing that has changed is I let them out of their yard to forage in the backyard in the evening yesterday. They haven't been wormed so maybe she pick up something?