Nick Garbutt / Yellow-rumped Caciques (Cacicus cela) at their nest in forest along the banks of the Cuiaba River, northern Pantanal, Mato Grosso State, Brazil, South America.

Nick Garbutt / Yellow-rumped Cacique (Cacicus cela), Hato La Aurora Reserve, Los Llanos, Colombia, South America.

Luiz Claudio Marigo / Yellow-rumped cacique (Cacicus cela) amongst flowers of Pink Ipe tree (Tabebuia ipe / Handroanthus impetiginosus) Pantanal, Mato Grosso State, Western Brazil.

Luiz Claudio Marigo / Yellow-rumped Cacique (Cacicus cela) displaying on his nest, Pantanal, Mato Grosso State, Western Brazil.

Luiz Claudio Marigo / Yellow-rumped Cacique (Cacicus cela) displaying on his nest, Pantanal, Mato Grosso State, Western Brazil.

Tim Laman / Yellow-rumped Cacique (Cacicus cela) at Napo Wildlife Center, Yasuni National Park, Orellana Province, Ecuador, July.

Daniel Heuclin / Yellow-rumped cacique (Cacicus cela) flying to nest, River Yapaquari, Bolivia.

Daniel Heuclin / Yellow-rumped cacique (Cacicus cela) two flying to / from nest, River Yapaquari, Bolivia.

Daniel Heuclin / Yellow-rumped cacique (Cacicus cela) two flying to nests, River Yapaquari, Bolivia.

Luiz Claudio Marigo / Yellow-rumped Cacique (Cacicus cela) male displaying to a female at the nest. The Pantanal wetlands of Mato Grosso State, Brazil, November.

David Welling / Yellow Rumped Cacique (Cacicus cela) perching on a branch next to its woven nest in the tropical rainforest of llanos, Venezuela, South America

Pete Oxford / Yellow-rumped Cacique (Cacicus cela) feeding on fruit, Orinoco River, north of Puerto Ayacucho, Apure, Venezuela