Thanks for the suggestions. I will be doing that in the future. Since I'm an outdoorsman and I hate to waste a bird, I cleaned the hen this morning. She did have an egg inside and her vent had clear fluid. Not entirely sure that killed her, but she did have that egg inside her. I also noticed...
I had a hen that was fine one day, the next she just sat and slept. Then, the next day she died. When I checked her, she had good color, size and she had laid this week. The only thing I noticed was she had lost some feathers on her belly and underside. Kinda patchy. The weather is cold here...