shake their head more aggressively, which is to blow on their head. If you blow across their feathers or blow across their nose, they just naturally respond with a shaking motion, their head like this. Good boy. Very good. So, at that point it's just a matter of putting it on cue where you're going to show the cue sign that you're going to use. And I like to shake my finger no at the bird and then have him respond. So, all I'm going to do is blow across his feathers and shake my finger while saying something like 'shake' or 'no' and reward him as soon as he does it... .