I have to say to myself that some birds aren't very close. Their feathers are just too bright. When they fly away, you know it's a sin to lock them up, and you'll be inspired by them. Still, the place you live in is that much more drab and empty that they're gone. I think I really miss my friends.
These walls are very interesting. When you first went to jail, you hated the high walls, and slowly, you get used to it. This is called institutionalization.