The 4th of my chickens has died of this mysterious slow "out to lunch" death. I bundled her in a plastic bag and put her in the freezer. As soon as I can, probably next Wed. I am going to try and do an autopsy (I don't think that is the right word correct me please.) Any tips on how to do ? and what to look for ? I am taking her way across the pasture to do this. Health of the other chickens and preditor attraction from smell, feathers, and etc. How will I know what is normall inside / how should I open her up as not to mess things up inside. THANKS !