I have a 10 week old blue marans roo, he is massive, he is the size of my 20 week pullets. Every time i go to the brooder to feed and water he goes for my hand and pecks me hard, i ussually give him a push with my hand and he runs off to the corner. Is this a sign he is going to be a bad roo? or is it just chick behaviour? Is there any thing i can do to start training him not to go for me?