Gabriel Rojo / Ashy headed geese {Chloephaga poliocephala} Lanin NP, Argentina

Konrad Wothe / Ashy-headed Goose (Chloephaga poliocephala), Cape Horn National Park, Chile

Hermann Brehm / Ashy headed goose {Chloephaga poliocephala} Torres del Paine NP, Chile

Hermann Brehm / Ashy headed goose {Chloephaga poliocephala} Torres del Paine NP, Chile

RHONDA KLEVANSKY / Ashy headed goose and chicks {Chloephaga poliocephaphala} Torres del Paine NP, Chile

Patricio Robles Gil / Ashy headed goose {Chloephaga poliocephala} Tierra del Fuego, Chile