Life at the Flying U Ranch in the Bear Paw country of Montana was pleasant-until thousands of sheep invaded the coulee. B. M. Bower casts the ancient enmity between cattlemen and sheepmen in her own robust and slyly humorous style. Flying U Ranch brings back the Happy Family of cowboys introduced in Chip of the Flying U. Bertha Muzzy Bower, a Montanan herself, understood the joshing, boasting, and thoroughly decent young hands who worked at the Flying U-Andy, Pink, Slim, Big Medicine, Happy Jack, and the other members of the Happy Family. Here they must confront defiant sheepherders just when Chip and the Old Man are in Chicago. Bower delights in showing how they deal with rage and frustration without resorting to violence. The witty and nervy Flying U bunch gets satisfaction from a difficult situation justly ended.