Oscar Dewhurst / Titicaca/short-winged grebe (Rollandia microptera) swimming in Lake Titicaca, Puno, Peru. September. Cropped

Oscar Dewhurst / White-tufted / Rolland's grebe (Rollandia rolland) swimming in Lake Titicaca, Puno, Peru. September. Cropped

Oscar Dewhurst / Andean coot (Fulica ardesiaca) swimming in Lake Titicaca, Puno, Peru. September

Merryn Thomas / Boats and pier at Isla del Sol, Lake Titicaca, Bolivia, December 2013.

Merryn Thomas / Cairn with cross on Isla del Sol, Lake Titicaca, Bolivia, December 2013.

Merryn Thomas / Cairn with cross on Isla del Sol, Lake Titicaca, Bolivia, December 2013.

Merryn Thomas / Thunderstorm over Copacabana, Lake Titicaca, Bolivia, December 2013.

Merryn Thomas / Floating reed island of Uros, Lake Titcaca, Peru, December 2013.

Cyril Ruoso / Andean coot (Fulica ardesiaca) on Lake Titicaca, Bolivia

Cyril Ruoso / Andean coot (Fulica ardesiaca) on Lake Titicaca, Bolivia

Cyril Ruoso / Puna teal (Anas puna) on Lake Titicaca, Bolivia

Cyril Ruoso / Andean coot (Fulica ardesiaca) taking off from surface of Lake Titicaca, Bolivia