Open her up and take photos as you go. The secret to photos that give us maximum information is to balance closeups with corresponding contextual photos so we can better identify what we're seeing and also have scale to bring us closer to reality.
There are many of us here who can stop by and comment. We'll holler for them to come see your photos.
My own experience with necropsies is that I can now identify tumors. Others know their way much better around internal organs and they can stop by and comment. You may find "hardboiled" eggs in the abdominal cavity. That would tell you the hen died from internal laying. Dark murky fluid in the abdomen can mean end stage liver disease.
You might cut open intestines and discover a heavy worm load killed the chicken. Some organs may be enlarged grotesquely, and they will be a clur an avian virus may be present in your flock.
There are many of us here who can stop by and comment. We'll holler for them to come see your photos.
My own experience with necropsies is that I can now identify tumors. Others know their way much better around internal organs and they can stop by and comment. You may find "hardboiled" eggs in the abdominal cavity. That would tell you the hen died from internal laying. Dark murky fluid in the abdomen can mean end stage liver disease.
You might cut open intestines and discover a heavy worm load killed the chicken. Some organs may be enlarged grotesquely, and they will be a clur an avian virus may be present in your flock.