My hen has a swollen abdomen. It's very soft and seems to be filled with fluid. Her vent area is very red and crusted with poop. She's been having diarrhea and she's still eating and drinking. Her abdomen and vent area are warm and I'm afraid this means she might have some kind of infection. I thought she may be egg bound, but I stuck my finger up her vent area and could feel nothing. She's had this problem once before and I was able to cure her by giving her canola oil and calcium, but this time none of those things seem to work. I'm afraid she might not last much longer and there are no vet's around here that will see chickens. Any advice?