The population of Ecuador is about 65% mestizo (mixed Amerindian and Spanish). About 25% are Amerindian; 7% are Spanish or others; and another 3% are black. There are only a few groups of unassimilated Amerindians on the coast, notably the Colorados and Cayapas. The blacks live mainly in the northern coastal province of Esmeraldas. The Amazon Basin is inhabited by many primitive tribes, including the Jívaros, once famous for their shrunken-head war trophies, and the Záparos, Aucas, Secoyas, and Cofanes. In the early 1980s, the tribes were organized in the Federación Shuar, which seeks to preserve their cultural identities.