Their distant cousins, the Skin Avian, have a special, genetic resistance to showing signs of aging, such as the general decadence of the outer body. However, there is still some noticeable pigment loss in the Skins over the years, such as in the hair and feathers. The flesh of Skin Avian may also become paler. Most Beaked Avian do not show this same trait, though, a rare few do. The reasons for this inherent resistance to aging is unknown.