Can anyone see anything diagnostically meaningful in this photo please? Any ideas as to cause of death? Death occurred somewhere between 3 and 13 hours prior to the photo (my guess ~8 hours).
Details:
- RFPF hen.
- Less than one year old.
- Has a nest of three fine looking 10 day old babies.
- Died on the nest overnight, after showing very minor signs of malaise yesterday - sitting a bit too still and quiet, but with no fluffing or sleeping.
- This was sudden. Was zooming about as usual in the days prior.
- Has clean eyes, nose and vent.
- Crop is entirely empty.
- Chest muscles are full and healthy. Superficially, a handsome bird.
- All other Parrotfinches in the same aviary are behaving normally. Only this one affected.

Thanks
