U.S. Fish and Wildlife Service (USFWS), designated critical habitat for the western distinct population segment of the yellow-billed cuckoo (western yellow-billed cuckoo) (Coccyzus americanus) under the ESA. In total, approximately 298,845 acres (120,939 hectares) are now being designated as critical habitat in Arizona, California, Colorado, Idaho, New Mexico, Texas, and Utah. This rule extends the Act's protections to critical habitat for this species. This rule is effective 21 May 2021. POC is Michael Fris, Field Supervisor, U.S. Fish and Wildlife Service, Sacramento Fish and Wildlife Office, 2800 Cottage Way, Room W-2605, Sacramento, California 95825; or by telephone 916-414-6600. (Federal Register: 21 April 2021 [Rule] pages 20798-21005)