Falcon's Wings are a vanity item for Diablo III, added in patch 2.4.1.
When used, they apply or remove a pair of feathered wings, being the first wings in game to portray actual feathers.
When obtained, they can be added to the Wardrobe. Only one set of Wings can be used at a time. If equipped, they will be visible even in character selection screen. If you already own them they will not drop again from another chest.
For a predator as majestic as they are lethal.