Sorry this will be a bit long, but want to include any clues that might be relevant. We were away for a week and a pet sitter stayed at our house and took care of our animals. We got home last night and I went to close the coop. It was very stormy, so I didn't open the hen house to check and make sure everyone was there, just shut the door. Today, when I went to let the girls out, I saw that our silver laced wyandotte was dead in the corner of the run, where the hens had made a little dust bath. She had obviously been rained on, so it was clear that she was already dead before the storm and had been there all night. I called the pet sitter and she said that Iris (dead chicken) was fine earlier in the day, but the pet sitter did notice that she went to sit in the dust bath. Before leaving town, I had noticed a few strange eggs (cracked or maybe w/out shells, plus a couple of tiny "fart" eggs) but everyone had been acting normal. The other thing worth mentioning is that when DH went to bury her, there was a normal egg under poor Iris. I feel like I've read things on BYC about eggs getting stuck or something like that...but not sure if this fits. I'm concerned this could be something contagious. The other hens do seem fine. Also, no evidence of a predator. Any ideas why my chicken died? Oh, and she was about 3 years old.