I've got a hen (BR) who's not doing so well and I'm uncertain of the cause. I found her sleeping in the nesting box three nights ago, which she has continued to do. My husband dusted them with DE recently to treat for lice (yesterday? The day before?), and said she was bony when he picked her up. My son said she was standing with legs splayed, falling asleep standing up, and he thought there was something wrong with her eyes. We have a mixed flock of 16 plus one surprise roo. We added 14 pullets (including the surprise roo) to our original three in April. She's one of the original three, and is about 18 mo. old. She was our dependable layer, until she began molting about a month ago. You can see her half-asleep in the second photo. In the last photo, she's the middle one with head down. Any help is greatly appreciated. Thanks!