Joseph Christopher Birdtail of Harlem, 36, pleaded guilty in U.S. District Court in Great Falls to sexually abusing a 1-½-year-old child.
U.S. Magistrate Judge Keith Strong set sentencing for Aug. 27. Birdtail is in custody awaiting the hearing.
According to the U.S. Attorney for the District of Montana, Birdtail abused the child March 30, 2012, at an unspecified location in the Fort Belknap Indian Reservation. The child was taken to an emergency room where a doctor confirmed the child had been sexually abused.