They say they consider things from the outside, it gives more objectivity. So my friend the carpenter, has decided that he would use his freedom to record the world and that instead of remaining in a cage, he would use this to protect his provisions, after all the free dead plus food must protect him for himself. The racks of its cage, allow that in the turns they want, they can enter their beak and enjoy themselves, the cage has comfort to lay their legs and taste while their food remains safe.