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

Johannes Melchers/ BIA / Yellow-rumped Cacique (Cacicus cela) calling, Bolivia

Johannes Melchers/ BIA / Yellow-rumped Cacique (Cacicus cela), Bolivia

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.

Konrad Wothe / Yellow-rumped Cacique (Cacicus cela) at nest, Panguana Nature Reserve, Peru