Bloated chicken-eggbound?

[lynna2018]

I'm so sorry you lost your hen.
I would second getting a necropsy done or if you are not too squeamish, you could cut her open yourself and take a look. My guess would be that she was suffering from either salpingitis(infection of the oviduct) and/or internal laying/Egg Yolk Peritonitis which may have lead to a build up of fluid in the abdominal cavity(Ascites)
If you decide to take a look inside yourself, take photos of everything or a video. There are threads here on BYC where we share such photos and discuss the likely cause of death and it is surprising how often you can pin point an issue even without medical training. I also use it as an opportunity to check for internal parasites(worms) in the gut. I find it really helps to make use of a death like this to learn and perhaps make changes to my flock management to prevent future similar occurrences or recognise the symptoms sooner and have more confidence in making the decision to euthanize.

I actually thought about cutting her open to see but I just couldn't bring myself to do it.
I'm squeemish.

 

[rebrascora]

It's a shame because it is a missed opportunity to learn but I accept that it is not something everyone can get their head around. I wish you and your remaining flock well.