In the rolling meadow below Mohawk Mountain in the northwest corner of Connecticut, a white buffalo baby trots alongside his massive mother, his whiteness highlighted against her dark brown winter fur that is still molting in the summer heat. The white buffalo or bison—Tatanka Ska in the Sioux language—was born June 16, at 1 p.m. on Peter Fay’s Mohawk Bison ranch in Goshen, Connecticut. Although Fay is not a Native and was only vaguely familiar with the story of the White Buffalo Calf Woman and the white buffalo as a spiritual symbol of sacred life and abundance to the Lakota...