The "Pterergos" is a bird-like dragon that is the result of an extinct species of dragon copulating with the "Roc Bird." The Pterergos was created by the author W. J. Gambino / TehAngryXeno for his high-fantasy book & videogame series "Lights in the Darkness." This species is open source, so draw and use to your heart's content! Just please give credit to either "W. J. Gambino" or to his pseudonym: "TehAngryXeno".