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

Glenn Bartley/ BIA / Ashy-headed Goose (Chloephaga poliocephala), Andes, Chile

Agustin Esmoris / Ashy-headed Goose (Chloephaga poliocephala), San Carlos de Bariloche, Argentina

Agustin Esmoris / Ashy-headed Goose (Chloephaga poliocephala), San Carlos de Bariloche, 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

Shane P. White / Ashy-headed Goose (Chloephaga poliocephala) pair, Perito Moreno Glacier, Bariloche, Patagonia, Argentina

Agustin Esmoris / Ashy-headed Goose (Chloephaga poliocephala) grazing, San Carlos de Bariloche, Argentina