This is my first trio. I recently killed the rooster and at 11 months found a lot of fat! I made a stew with the back portion and found the skeletal structure to be somewhat different than what I'm used to! The bones remained hard as rock even after many hours of cooking time! The trio has provided 2 young roosters and 2 young hens to keep their moms company. Will the young roosters eventually mount both their mothers and sisters?