You have wings which you can use to fly. 120ft Max speed with light or no Armour, 60ft Max speed with medium Armour. Your Max fly distance increases with you constitution and your Max fly speed will increase with your Strength. You don't need to make a check to fly but you does make you more tired and it may make you get an exhaustion point faster (This feat is more for a narrative and role playing stand point rather than a downright math stand point).