Endangered and Threatened Wildlife and Plants; Endangered Species Status for Sira Curassow and Southern Helmeted Curassow

We, the U.S. Fish and Wildlife Service (Service), determine endangered species status under the Endangered Species Act of 1973 (Act), as amended, for the Sira curassow (Pauxi koepckeae) and southern helmeted curassow (Pauxi unicornis), two bird species from South America. This rule extends the protections of the Act to these species.