NATURE enters their secret world with wildlife filmmaker Fergus Beeley and his team of cameramen as they locate a nest and struggle to document the lives of these elusive birds in Venezuela’s Orinoco River jungle.

After three days of rain, a harpy mother is desperate to feed her hungry chick.

Filmmaker Fergus Beeley comments on the impressive strength of the great harpy eagle.

The harpy eagle comes equipped with an arsenal of physical features that make it a skilled and accomplished predator.

"Wiser filmmakers would choose subjects which are better studied. I get a thrill from knowing that what we have recorded is new to science." An interview with Jungle Eagle filmmaker Fergus Beeley.

Talons as large as grizzly claws, and other facts and stats about Harpia harpyja.

Harpy eagles are the most powerful birds of prey in the world. Standing three feet tall, with a six-foot wingspan and razor-sharp talons the size of bear claws, these birds are the heavyweight hunters of the South American rainforest.