Loic Poidevin / Mineral deposits at the Dallol hydrothermal site on the Karoum salt lake, Danakil depression, northern Ethiopia, February 2009

Glenn Bartley / Rufous-collared Sparrow (Zonotrichia capensis) singing, Ecuador

Konrad Wothe / Rufous collared Sparrow (Zonotrichia capensis) singing, Costa Rica

Luiz Claudio Marigo / Rufous-collared sparrow (Zonotrichia capensis) male looking at its own image in car mirror, Atlantic Rainforest of Serrinha do Alambari Environmental Protection Area, Rio de Janeiro State, Southeaster...

Bryan and Cherry Alexander / Rufous collared sparrow (Zonotrichia capensis) in Ushuaia, Argentina.

Murray Cooper / Rufous-collared Sparrow (Zonotrichia capensis) singing, Peru

Murray Cooper / Rufous-collared Sparrow (Zonotrichia capensis) male and female, Ecuador

Pete Oxford / Rufous-collared Sparrow (Zonotrichia capensis) Andes, Ecuador

Pete Oxford / Rufous-collared Sparrow (Zonotrichia capensis) Andes, Ecuador

Pete Oxford / Rufous-collared Sparrow (Zonotrichia capensis) juvenile, Andes, Ecuador

Hermann Brehm / Rufous collared sparrow {Zonotrichia capensis} singing, Torres del Paine NP, Chile

Gabriel Rojo / Rufous collared sparrow {Zonotrichia capensis} Valdez, Patagonia, Argentina Chubut

Thomas Marent / Rufous-collared Sparrow (Zonotrichia capensis), Tatama National Park, Colombia