Thanks for the replies. We wrote the below up as our findings, running to a veterinarian to pay hundreds of dollars for a examination or post mortum was not an option. People are free to make their own conclusions from that and what we've added on our experience below.
We are not avian...
Chicken trachea windpipe obstruction
Is it possible for a food object to enter the trachea? If the chicken has swallowed a food object that has not been adequately broken down and become lodged in the oesophagus could this impinge on the trachea?
We just recently lost one bird and found...