I've just experienced our first loss. My lovely Martha passed away not long ago. I've checked her over and I can't see any obvious signs of injury. She's about 8 months old, i noticed yesterday that she seemed a bit off, not scratching about as much as the others, not running as quickly for meal worms, but still happily gobbling them out of my hands. The last few days she'd also been laying in the run rather than the nest box (all others laying in the box). I went to clean the poop trays this morning and found her laying in the nest box, lethargic and with laboured breathing, she died shortly after. No obvious signs of respiratory infection. I've looked at her crop and taken a picture because I don't know if it looks normal. I'm wondering if maybe she had sour crop? It doesn't feel impacted and I hadn't noticed it bulging at all on previous days when holding her. I am absolutely devastated.