dkosh, you say her abdomen was hard? I have a hen that has been acting ill the past couple days. She was separating herself yesterday and not eating but drinking. I checked her out and her abdomen is very hard but not hot and extended like other internal layers I've had. Last night, she spent the night in a box on the floor. Today she was at least eating so I don't know. Her abdomen is still hard.
Something I'm experimenting with... black cohosh. Years ago, one of my better hens became an internal layer in her second year. I researched for a long time and she had been this way for several months at least. I didn't know what to do and couldn't find any cures so I decided to try black cohosh as it is used with women having troubles with their reproductive processes. She was going to die if I didn't help anyway so I figured I had nothing to lose. I sprinkled about a half teaspoon on her food each day. She ate it and also ate charcoal like it was a lifeline. Apparently it absorbs toxins and helps them flush it from their bodies. Anyway, this went on for quite a while and she actually started passing the yolks onto the poop board at night. It was pretty icky. No shells were being formed and I don't remember seeing egg whites. But I thought maybe she was getting better so I stopped the treatment and it wasn't long til she was laying internally again. I ended up culling her.
But this hen is different, although when I picked her up tonight to check her out, I noticed she had egg yolk on her back end. Now either she is an internal layer now or she had an egg break inside. I gave her some black cohosh tonight. I'm hoping that if I catch it sooner, it might be more beneficial. Tomorrow I may try probing to find an empty shell... maybe. Not sure on that one. I'm not real sure what to do yet. Need to think about it some more and see how she is.