I just held a hen in my arms while she died. I have no idea what happened, but I went to the shed to check on the birds, and she was gasping, and convulsing all while roosting. In fact, she was scaring the turkey hen next to her. I took her down to see what was wrong with her and within less than 10 minutes, she died. Because she was gasping, and I checked to see if there was anything stuck in her throat or crop, but couldn't find anything and then one giant seziure and she threw her head back and she died right in my arms. I have no idea what killed my poor Rosie. So in a week, I have now lost 4 chickens. One of them being my favorite black silkie hen, Beauty. She would sit on my lap while I milked the goats on cold mornings to warm up or at least come and say hello and she laied the cutest little cream colored eggs. Two others were eaten by something who will be trapped tomorrow night. What could have killed my poor little EE Rosie? It was so sudden and she had been roosting for quite a while already and when I checked on everyone around 7:00 she was okay.