On August 28th we weighed all of our girls and in grams Anna weighed in at 2270g. She looked like she was starting to molt as she had some feather that need to be replaced. Most of the time we don't need to pick up our girls when we put them up at night as we bait them and they all just go into their pens. Over the past week it has been cold and one after afternoon I noticed her not running out when they were out so I went and picked her up and she weighed NOTHING! I held her, the sun was out and she napped in my arms as I pet her. After a while she jumped down and was back to her normal self. John, my hubby, has been make warmed oats for them since it has been so cold and all of the girls love it and she has been eating a lot of it. She still runs around the yard flapping and scratching for stuff, eating what greens they find and bugs. Last night we weighed her and she is down to 1340grams! We were shocked! It is raining and cold outside so we have her in the greenhouse with a heat lamp. John just fixed her some oats, gave her some corn, their favorite, water and some of our parrots highly fortified food, another of their favorite. After she ate I held her and she went to sleep, while John found the heat lamp and then I put her down under it and she is closing her eyes under it. Next time he goes out he will take some of her food out there. Any suggestion on what to do? Her comb is still good color and other than it looks like she is molting, her feathers look good. My daughters friend who knows chickens was here and looked and said she didn't have mites but that is all we got, we just met her. We have 12 hens including Anna and she is the only one who is losing weight and we have no idea what to do. After feeding her oats and corn her dropping was loose but still formed and looked normal. Thank you.