When I saw the header of your post, I thought 'Hm. Should post pics of my arms'. But then I saw your pic and I don't need to post mine. They're the same. Not only that, but I have identical scratches on my forehead from where the Beaks use me as a landing pad. I'm trying to teach them to come only to my hand, but it's slow going. I do like the nail file idea, but there is no way on God's Green Earth that my Beaks will allow me to hold their feet during such a process. Oh, and yes, they have the concrete perches too. To be honest, I don't mind shedding a bit of blood for my Beaks. I love 'em!