I had a 2 yr old rooster that I found with his head stuck in a crack in the doors of my horse trailer, he had been there a while. I got him loose and I knew he wasn't going to make it. It was very hot that day. I processed him, let the meat rest a cpl days and put him in the freezer. Didn't want that meat to go to waste. I've eaten old Yummy stewed roos before. I took him out the other day and cooked him low and slow all day long. ( crock pot ). The meat never did release from the bone and it was just weird and tough. I've stewed older roos before, no problems. I gave the meat to the dog, and saved the broth because it was Yummy. I put the broth in the fridge so I could remove some of the fat after it cooled. Well that pot of broth turned into broth jello. Seriously, it was a broth jello mold. So weird. Think it was stress related? That roo probably struggled to get loose for a cpl hours, in the heat. Never seen jello broth like that.