Blue Duck could never avoid a moment of fear, when his father's eyes became the eyes of a snake. He choked off his insult -- he knew that if he spoke, he might, in an instant, find himself fighting Buffalo Hump. He had seen it before, with other warriors. Someone would say one word too many, would fail to see the snake in his father's eyes, and the next moment Buffalo Hump would be pulling his long bloody knife from between the other warrior's ribs. Blue Duck waited. He knew that it was not a day to fight his father.