Winged Magic — Mary H. Herbert

Peace has come at last to the Dark Horse Clans, but when Kelene and Gabria are kidnapped by a Turic tribesman, the fragile truce is threatened. Mother and daughter must come up with a plan to foil the diabolical Fel Karak, who coerces them into teaching him sorcery. A mysterious tribe from the mountains, Kelene's winged Hunnuli Demira, and the people of the Clans join forces to battle a fearsome magic more powerful than any they have ever seen.