This Native American tribe's stories describe the trickster First Angry and siblings who own an eagle-feather talisman and kill monsters with arrows made of thunderbolts.
In one of these people's stories, a black rock is tossed into a black lake and sinks instead of floating, signaling the death of a hermaphrodite. That dead figure becomes the first soul claimed by the sun and moon after they assume their roles by entering into a piece of turquoise and a white shell, respectively. In another story from these people, men pleasure themselves with animal meat and women with feathers, horns, and stones during a time when the sexes are living apart on opposite sides of a river. According to these people, humans came to this world by climbing up a reed to flee the (*) flooded worlds of the Holy People, Swallow People, and Air-Spirit People. This Native American tribe's stories describe the trickster First Angry and siblings who own an eagle-feather talisman and kill monsters with arrows made of thunderbolts. For 10 points, name this Native American tribe whose stories tell of the Hero Twins and Spider Grandmother and who live in a reservation in the Four Corners area. 
In one of these people's stories, a black rock is tossed into a black lake and sinks instead of floating, signaling the death of a hermaphrodite.
Navajo [accept  DinÃ© or  NaabeehÃ³]