Lucas Bustamante / Black and chestnut eagle (Spizaetus isidori) calling, perched on branch, Baeza, Napo, Ecuador.

Murray Cooper / Black-and-chestnut Eagle (Spizaetus isidori) chick and parent at nest, Ecuador

Murray Cooper / Black-and-chestnut Eagle (Spizaetus isidori) parent at nest with chick protecting prey parent just brought, Ecuador

Pete Oxford / Head portrait of Black-and-chestnut eagle (Spizaetus / Oroaetus isidori) Andes, Ecuador, South America

Pete Oxford / Black-and-chestnut Eagle (Spizaetus isidori), Andes Mountains, Ecuador

Pete Oxford / Black-and-chestnut Eagle (Spizaetus isidori) portrait, Andes Mountains, Ecuador

Murray Cooper / Black-and-Chestnut Eagle (Spizaetus isidori) at nest with chick, Andes, Ecuador

Daniel Mideros / Black-and-chestnut eagle (Spizaetus isidori) adult leaving its nest with chick in it. Then another adult returns to the nest with a branch in its beak. Ecuador. June. Endangered.

Maxime Aliaga / Black-and-chestnut eagle (Spizaetus isidori) perched. Peru.