The U.S. Fish and Wildlife Service has determined threatened species status under the Endangered Species Act of 1973 (Act), as amended, for the hyacinth macaw (Anodorhynchus hyacinthinus), a species that occurs almost exclusively in Brazil and marginally in Bolivia and Paraguay. This rule adds this species to the List of Endangered and Threatened Wildlife. FWS is also establishing a rule pursuant to section 4(d) of the Act to further provide for the conservation of the hyacinth macaw. This rule is effective 12 September 2018. POC is Don Morgan, Chief, Division of Delisting and Foreign Species, Ecological Services Program, U.S. Fish and Wildlife Service, 5275 Leesburg Pike, MS: ES, Falls Church, VA 22041; tel: 703-358-2444 (Federal Register; 13 August 2018 [Rules and Regulations], pages 39894-39916).