Delicate Wing

Source
This item drops from high-level winged creatures: It can also be found in Crate of Tasty Meat which is purchased from Jon Casper‎ in Stormwind and Shazdar in Orgrimmar.
 * Diseased Vulture in Uldum
 * Hyjal Roc in Mount Hyjal
 * Hyjal Eagle in Mount Hyjal
 * Hyjal Darkhawk in Mount Hyjal
 * Hyjal Screecher in Mount Hyjal
 * Untamed Gryphon in the Twilight Highlands
 * Tawny Owl in the Twilight Highlands

Cooking

 * Broiled Dragon Feast
 * Feathered Lure