The Traditions of the Hopi, by H.R. Voth, , at sacred-texts.com
Fox comes along as Cóoyoko uncle is sitting on bluff. He is waiting to watch sun rise. He tells Fox to come and sit near him. Says they will have contest to see on whose song sun will rise, looser to be killed with knife. Cóoyoko sings song first. Fox follows. Cóoyoko sings again and sun is just about to loom up. Fox repeats his song and while singing sun looms up. Fox wins contest and he cuts Cóoyoko's throat with knife.