Nate Chappell/ BIA / Savannah Hawk (Buteogallus meridionalis) juvenile flying, Pantanal, Brazil

Gabriel Rojo / Savanna hawk ( Heterospizias meridionalis) Ibera Marshes, Corrientes Province, Argentina.

Thomas Marent / Savannah Hawk (Buteogallus meridionalis) juvenile, Los Llanos, Colombia

Laurent Geslin / Savanna hawk (Buteogallus meridionalis) Pantanal, Matto Grosso, Brazil.

Mary McDonald / Savanna hawk (Buteogallus meridionalis) on a branch, Pouso Alegre, Pantanal, Mato Grosso, Brazil. August.

Lou Coetzer / Fork tailed drongo (Dicrurus adsimilis) mobbing Martial eagle (Polemaetus bellicosus) taking off, Chobe River, Botswana.

Angelo Gandolfi / Savanna Hawks (Buteogallus meridionalis) one in flight and one perched, Pantanal, Brazil.

Anup Shah / African harrier hawk (Polyboroides typus) investigating a tree trunk, looking for food, Masai Mara National Reserve, Kenya. March

Anup Shah / African harrier hawk (Polyboroides typus) walking up to a tree, Masai Mara National Reserve, Kenya. March

Anup Shah / African harrier hawk (Polyboroides typus) investigating a cavity to see if there is a nest to steal eggs from, Masai Mara National Reserve, Kenya. March

Patricio Robles Gil / Savanna Hawk (Buteogallus meridionalis) taking flight. Parana, Southern Brazil.

Luciano Candisani / Savannah Hawk (Buteogallus meridionalis), Pantanal, Brazil