I brought home a trio of Silkie/Showgirl chicks on Saturday that are about 10 weeks old. All were in pristine condition until yesterday when one of the Showgirls started acting "off". She has her feathers fluffed, she keeps her head/neck in close but upright. She eats and drinks just fine, but isn't as active or robust as her mates. I'm already in love with all of them (they're mostly for pets, although the breeder suggested we try showing in the future) and so I don't want to lose this one. Is there anything I can do? What sort of illness does this sound like? By the way, the breeder had been keeping the chicks outdoors and putting a lamp on them at night. I bring them in at night as I don't have electricity run to the shed my birds/rabbits are in. I have had them in all day today because we had a sudden drop in temperature which they're not accustomed to.