I used to have a dark cornish hen who would always sneeze. She sneezed pretty much every day for her entire life. I never thought much about it until one day I noticed that there was a little discharge. I wiped her nose and she was fine. About 2 weeks later I found her dead in a nesting box with no signs of injuries or illness. She was only 18 months old at the time and was laying regularly. Besides sneezing she was a very healthy bird. Do you think that the sneezing had something to do with her death? I can't think of anything else...