This big bird has a variety of attacks. When he swoops down toward you, hit him with the sword. If he flies straight across the screen the sword is your best bet. Unless of course he's too high. Then use your Hookshot. The hard part will be when he tries to blow you off the tower. Equip the shield. When he starts to blow the wind, push the opposite direction. The feather attack can be deflected with the shield. Make sure you're never too close to the sides of the tower, as he could knock you off unexpectedly. Battle hard and you'll win.