White-cheeked pintail duck (Anas bahamensis) on Rabida Island, Galapagos Islands, Ecuador, South America

Black cheeked Woodpecker (Melanerpes Pucherani), Boca Tapada, Alajuela Province, Costa Rica, Central America

A spine-cheeked anemonefish (Premnas biaculeatus) swims among the tentacles of its host anemone in Wakatobi National Park, Indonesia.

Galapagos white-cheeked pintail (Anas bahamensis galapagensis) feeding near giant tortoise in the Galapagos Islands, UNESCO World Heritage Site, Ecuador, South America

Galapagos white-cheeked pintail (Anas bahamensis galapagensis) feeding near giant tortoise in the Galapagos Islands, UNESCO World Heritage Site, Ecuador, South America

Black-cheeked Woodpecker (Melanerpes pucherani), Boca Tapada, Alajuela Province, Costa Rica, Central America

Galapagos white-cheeked pintail (Anas bahamensis galapagensis) feeding in the Galapagos Islands, UNESCO World Heritage Site, Ecuador, South America

Galapagos white-cheeked pintail (Anas bahamensis galapagensis) feeding near giant tortoise in the Galapagos Island Archipelago, Ecuador

Adult white-cheeked pintail (Anas bahamensis) ducks in a freshwater pond in the highlands of Santa Cruz Island in the Galapagos Island Archipelago, Ecuador

Adult white-cheeked pintail (Anas bahamensis) ducks in a freshwater pond in the highlands of Santa Cruz Island in the Galapagos Island Archipelago, Ecuador

Adult white-cheeked pintail (Anas bahamensis) ducks in a freshwater pond in the highlands of Santa Cruz Island in the Galapagos Island Archipelago, Ecuador

Northern White-Cheeked Gibbon, (Nomascus leucogenys), adult female with young on tree, Vietnam, Asia

Northern White-cheeked Gibbons, (Nomascus leucogenys, Hylobates concolor leucogenys), pair, captive, Asian species, Czech Republic, Europe

Northern White-cheeked Gibbon (Hylobates leucogenys), female adult calling in tree, Asia

Northern White-cheeked Gibbons, (Nomascus leucogenys, Hylobates concolor leucogenys), pair, captive, Asian species, Czech Republic, Europe

Northern White-cheeked Gibbons, (Nomascus leucogenys, Hylobates concolor leucogenys), pair, captive, Asian species, Czech Republic, Europe

Northern white-cheeked gibbon, (Nomascus leucogenys), adult female on tree, captive, Occurrence Vietnam, Asia, Adelaide, Australia, Oceania

Northern White-cheeked Gibbon (Hylobates leucogenys), female adult in tree, Asia

Northern White-cheeked Gibbon (Hylobates leucogenys), female adult in tree, Asia