We found out recently our free range hens were free ranging the livestock feed more than we knew. We had one up and die every morning easter week almost for 4 days! Every morning a new hen dead in the coup. Had a vet do a post Mortem and she said healthy other than fatty liver disease! In my rhodie! She hemorrhaged and had a blood clot.So jumping off the roost probably did it.
Today in front of my son, our almost a year old cornish cross jumped from about 4 ft high onto the ground where she lay immediately dead. We processed her and during inspection I saw her intestines looked pale with red capillaries. Her heart had the sac around it full of blood so I know her heart probably burst.