Here. When there are two tribes (Hoopa and Yurok in this case) mentioned, the state must notice both of them.
Such questions might have been resolved had the Department bothered to interview Richard concerning his Indian ancestry, as it had an affirmative duty to do. We will not rely on Richard’s representations when the Department manifestly failed to exercise due diligence and the record contains no communication from the Hoopa Valley Tribe regarding Richard’s membership or the children’s eligibility.