I had a gosling wth angle wing once. Used the ace bandage that sticks to itself. This way when you take it off it wont stick to the feathers. I just wrapped the wing its self secure/snug so as not to hurt the little thing, but tight enough to straightne out the growth, I rememebr mine happened just as he was getting pin feathers too.. As I recall more that 2 times around the wing only made it too heavy for the little thing to hold the wing in place. i have read about wrapping it around the body but after 10 to 14 days I took mine off and was fine. He is now a one yr old gander and looks fine. I researhed that too high protien feed is the culprit for angle wing, but dont know for sure. No it wont kill him or shorten his life just looks a bit odd. I have seen geese and ducks in the wild at the local lake with angle wing. So google "Metzar farms" he has really good iinformation there about several goose and duck issues, including angle wing. I have even called them for advice and they were great. take care good luck.