Poorly Pekin?

[kempymoo]

Hi - we have eight pet Pekins which free range in our garden. This afternoon I looked outside to see one of them sitting alone under a tree - I went to investigate fearing I was going to find a dead hen. But she wasn't dead - just sitting completely still by herself. She's since moved in to their house and has sat there all afternoon. I don't think she's brooding - she isn't on an egg or in the nest box? Might anyone have any ideas? Thanks!

 

[kempymoo]

An update on this - I've been outside to spend a bit of time with her. She won't eat or drink, she is just completely still, often with her eyes closed. She made no fuss at all about being picked up - not a peep. She looks quite fluffed up and "big". If anyone has any ideas or suggestions I'd be really grateful - I would be heartbroken to lose her. Thank you!