Mark Pearman is a founding member of the Neotropical Bird Club. His books include Annotated Checklist of the Birds of Argentina and The Essential Guide to Birding in Chile. He has been birding in South America since 1986, and his explorations in Argentina and Paraguay have served as the basis for far-reaching conservation programs and initiatives. Juan Ignacio Areta is an ornithologist based in Northwest Argentina. He is head of the Laboratorio de Ecología, Comportamiento y Sonidos Naturales (ECOSON-IBIGEO); CONICET researcher; and associate chair of the South American Classification Committee of the American Ornithological Society.