Bernard Castelein / Yellow-rumped cacique (Cacicus cela) calling, Madidi NP, Bolivia

Bernard Castelein / Yellow-rumped cacique (Cacicus cela), group of four perched, MadidiNP, Bolivia

Bernard Castelein / Yellow-rumped cacique (Cacicus cela), Madidi NP, Bolivia

Lucas Bustamante / Yellow-rumped cacique (Cacicus cela) perched in tree, Yasuni National Park, Orellana, Ecuador.

Hermann Brehm / Yellow-rumped cacique (Cacicus cela) building nest, Pantanal, Brazil

David Tipling / Yellow-rumped cacique (Cacicus cela) male calling Canopy Camp Darien National Park UNESCO World Heritage Site, Panama.

David Tipling / Yellow-rumped cacique (Cacicus cela) male calling, Canopy Camp, Darien National Park UNESCO World Heritage Site, Panama.

Hermann Brehm / Yellow-rumped Cacique (Cacicus cela) building nest, Pantanal, Brazil.

Suzi Eszterhas / Yellow-rumped cacique (Cacicus cela) at nest, Pantanal, Brazil.

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.