Things like this happen to all of us, as you can see.
One windy day, the lid blew off the chicken run, and it was sods law one of the bantams must have been walking past or sitting alongside, and it fell on her and trapped her. I found her dead that night. Then I have had numerous hens tip buckets up on themselves. Have found them dripping in sweat,but one was not furtunate and suffocated before I found her. Then I had one climb in a horse feed sack, which was empty, and get trapped. Think she was there a coupld of very hot days until I saw the sack moving .....she jumped out and ran for a drink!!