1) What type of bird , age and weight (does the chicken seem or feel lighter or thinner than the others.) Largefowl barnyard mix, I don't know her age, but she's older than 2 years. She does feel lighter and thinner than the others. 2) What is the behavior, exactly. Not laying, waddling, has trouble flying, is reserved. A month ago, she squatted and laid an egg in the middle of the yard (new behavior), and she hasn't laid since. 3) How long has the bird been exhibiting symptoms? About 4 weeks 4) Are other birds exhibiting the same symptoms? No 5) Is there any bleeding, injury, broken bones or other sign of trauma. No, but her comb is droopy and a little pale, and her belly is distended. 6) What happened, if anything that you know of, that may have caused the situation. The egg in the yard got my attention, but I don't know what could have caused it. 7) What has the bird been eating and drinking, if at all. She is eating and drinking, but not as enthusiastically. They are on chick starter because the younger birds have been integrated and aren't laying yet. There is a dish of layer crumbles in the "big girl" coop, but she doesn't eat that. 8) How does the poop look? Normal? Bloody? Runny? etc. Poop is runny. 9) What has been the treatment you have administered so far? I tried a warm bath and lubed her vent, offered crushed tums, but she didn't eat it. 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? I want to treat completely myself. 11) If you have a picture of the wound or condition, please post it. It may help. I'll post a pic of her. 12) Describe the housing/bedding in use The birds have the whole backyard to roam, sometimes free ranging through the whole property, but not every day. She sleeps in a small coop with two other girls.