1) What type of bird, age and weight (does the chicken seem or feel lighter or thinner than the others.) She is a Rhode Island Red and my sweetest bird. She is about 3 to 3 and 1/2 years old. I posted this because I noticed a week or two ago she felt rather light compared to my other RIR. At first I thought maybe she was just lighter than the others and I just never noticed, but it seems to be getting worse. I know she's not laying because my only other RIR is currently finishing up a molt and there have been no RIR eggs lately. 2) What is the behavior, exactly. She's still moving and foraging with the others, but not as much as she used to. Her comb seems paler and droopier than usual (with a scab on it, but I'm not sure if that's related or not). 3) How long has the bird been exhibiting symptoms? I noticed her most drastic weight difference today but overall has been like this for a couple weeks. 4) Are other birds exhibiting the same symptoms? No, thank God... 5) Is there any bleeding, injury, broken bones or other sign of trauma. Not that I could find except that one scab. I checked her crop right when I let them out this morning and it was empty like it should be. 6) What happened, if anything that you know of, that may have caused the situation. No. I did post awhile back on a thread titled "Lethargic Hen" but this behavior only seemed to last a day or two. I don't know if this is the same thing or that was what caused it, but perhaps it's worth mentioning. 7) What has the bird been eating and drinking, if at all. I'm not completely sure. I will check her crop later today and see if it is still empty for an update. 8) How does the poop look? Normal? Bloody? Runny? etc. I will have to update. 9) What has been the treatment you have administered so far? I have not done much yet but I plan to isolate her and observe her poop. I have worm medication on-hand if necessary - it seems like it could be worms. 10 ) What is your intent as far as treatment? For example, do you want to treat completely yourself, or do you need help in stabilizing the bird til you can get to a vet? We have an exotic vet nearby but $$$ is an issue. I would prefer to take her to the vet only if it is very necessary. 11) If you have a picture of the wound or condition, please post it. It may help. I will post a picture soon. 12) Describe the housing/bedding in use Their run is my entire backyard and they sleep in a small coop with just two roosts and a nesting box. Of course, they have all-day access to food, water, oyster shell, and snuggles. We have no roos.