Oh. I take a blanket and wrap my crossbeak up tight in it. Then I gently hold her head (careful not to have your finger on her throat) while I file. My crossbeak does rather well with it. (True, I've been filing her beak since she was few months old and do it about every two weeks, so she might just be really used to me doing it.)I couldn't do it...I'm afraid of hurting her....and she'd probably always be afraid of me holding her after that...