I started playing with him after getting my ass handed to me by Kuno's Pokemon Trainer while using Zelda/Shiek today. After being told he's medium weight, I really want to use him as my primary.
Tips: Can "fly' like Jigglypuff 4 times in the air by flapping his wings. If he glides on the fouth flap (by holding jump down) he can't do anything else (Air Dodge, attack, Up+B) after coming out of it. But, if he glides before the fourth, he can do his remaining flaps, or whatever else he wants, including Up+B and Air dodging.
His Arrow shot is chargeable, and you can control it after you launch it to arc up or down. After you start charging a shot, you can change the direction you shoot in 90 degree increments, up, left, or right. I didn't try shielding while charging the shot to see if there was a cancel/store option. This is a great move to use in between flaps when you're recovering to keep pressure on the ledge and prevent your opponent from being able to set up an edge hog.
Reflector shield didn't see alot of use, not very familiar with it.
His Fly special is just very abusable, and punishable. If you get hit while doing it you're done, can't redo it like most characters. But he can fly all the way underneath most stages to the other side using this move, to grab onto the ledge for a safe recovery.
Forward+B can really rack up some nice damage quickly, it's great for use on jumpin, and seems to have very good priority attack wise. Marth/Ike counters knock you out of it however.
Anyone else have any strategies or comments?
XI Wiki

