What does Billy learn about how Boyd died?

Billy encounters the man who had given the boys permission to take their horses. The man says that Boyd had become "very popular with the people." The man says that Boyd had killed two men in Galeana and that he does not know why. One of the men had a friend who tracked Boyd and killed him. The man says that Boyd was hunted so that his death was inevitable. The discussion turns to who had the responsibility for caring for Boyd, and the man says that Boyd did not want to be cared for and that he had only wanted to shoot people.