Mystery death of 1 year old Isa Brown

[Monstermouth]

Last night, my favorite chicken, Duck Duck, was standing in the corner of the run looking droopy. I picked her up, put her in the coop and offered her some mealworms. She turned her head away. Her vent looked good, no signs of egg binding on palpation, and she had just laid the day before, none if the birds have mites, no runny eyes or nose, no sneezing. No trouble standing. Wattles and comb looked normal. The day before, she was 100%. I went inside to set up a sickbay and formulate a plan if action involving warmth, vitamins, vetrx, and good foods. By the time all was ready, it was a few hours past dark and I didn't want to disturb her sleep and decided to wait til morning to bring her in. Well, 5 am I went out to the coop and she was dead. Nestled in the straw, face down like she fell asleep. Aside from our family's great sadness at her loss, I'm also confused about what caused this. I carefully checked through the coop and chicken yard for anything dangerous she may have come in contact with, or any unusual poop...nothing.
Any ideas what could have caused her very premature death?

 

[BoomChickaPop]

Very interresting
You can get an Otopsy to determine cause of death.
I have had many chickens just keel over with no symptons.
The worst was my BCM roo Copper, that day he was perfectly normal walking around with his ladies. I came back 2 hrs later and he was dead in an electric fence with 2 big guard dogs. He just keeled over for no reason.

I would look into an Otopsy
I never did cause I had already buried him

BCP

 

[Monstermouth]

I've heard that the university an hour away offers services (autopsy/toxicology). What I need to do is get ahold of the procedures I need to follow/cost/etc, so if this happens again, I'm prepared with a plan. As it stands, the body is already gone. I'm sorry about your roo. I anticipate the possibility of sudden death at other life stages, but this one has me puzzled because we did see 12 hours or so of standing droopiness first. Thanks for your reply!