2 days ago, I got a report from my daughter that one of our hens was acting weird and following her, I went outside to go look at the hen and she looked fine, I thought maybe she was just hungry because there food bowl was licked clean. I walked away and watched how she acted with the other birds, and she did the same as she always does, digs, eats dirt, etc. I went down to the chicken coop and filled there food bowl up and called CHICKEN!! like I always do. All of them came even Waffles, witch is the name of the sick hen, running down the hill and just coming from every where, they ran to the food and ate, but, I noticed, they didn't let Waffles eat, and this was very odd because she's the leader of the pack and they usually let her eat first. Well, I picked her up and I was VERY shocked to see she was lighter then a feather, maybe even as light as air! I got worried after that and put her in the front of the chicken coop, witch is closed off and usually only for sick chickens or baby chickens, anyway, I gave her some food and she chowed down very fast, so, I guess they haven't been letting her eat for awhile. I came back 6 hours later, she was heavier, witch was good, but, I went inside to make dinner and go to bed, I came back to see her today. She had knocked her food down and spilt some water, she was kinda in a panic attack because she didn't know where her friends where, I picked her up and once again she was as light as yesterday! I looked around for bloody poops and stuff, and there were only VERY watery poops, no blood to be found. At first, before I picked her up, I thought maybe another egg got stuck, she had a problem laying an egg before, but, now I guess not. I watched her and shes not acting like she has marek's, shes not painting, no droopy wings, weird legs, etc. She is acting exactly the same, just shes light and has watery poops, I felt for like anything weird around her body, and I found nothing, odd thing is, you can't really feel her bones, like to see if shes starving to death. Can something she ate do this? I know there's a lot of weird plants around here, or, do you think shes just light because she didn't eat and I should take her in so, she can be alone?