Pinion.... You Actually Amputate The Distal Tip Of 1 Wing--- Quick Easy And Permanent. And It Really Adjusts Their Lil Spastic Attitudes --- Settles Them Down Quite A Bit. They Can Still Fly Once Pinioned, But Only For Very Short Distances And Low Altitudes--- Like Clipping But Permanent. With Clipping 1 Day You Will Go Out And Open The Pen And Whoooooooosh! They'll Flush -- Usually Toward The Opening Where You're Standing And They'll Get By You And Out Of The Pen.... Thats When You Know They Need Their Wings Clipped Again! Pinion Do It Once And Be Done Forever.