Aloha fellow chicken lovers - I've owned hens for a few years now and have lost a couple - both were egg bound. My chickens are healthy and good layers….Just yesterday one of my older hens (about 3 1/2) was hiding in the bushes wheezing. I gently pulled her out and she immediately started convulsing and coughing up what looked to be egg yolk (could have been mucus?)…I set her down and I tried to give her some water with no success...I watched in complete helplessness for the next painful 60 seconds as she convulsed and flapped her wings gasping for air. She seems to have suffocated???!!. She wheezed up this egg yolk liquid a few times before dying on her back. It was completely horrifying and I can't find ANYTHING explaining what might have happened. She was completely fine, symptom free, roaming the yard and eating normally the day before…even earlier that morning..I'm completely baffled and have no explanation. My other hens are completely fine today and show no signs of distress or illness. I've read about sudden chicken death - that might explain the "sudden death" and the convulsing and flapping of the wings but what about the wheezing and egg yolk colored liquid she was coughing up? Has anyone experienced this before?? I really appreciate your help!!!