The Chaco eagle or crowned solitary eagle, is an endangered bird of prey from eastern and central South America. Typically it is known simply as the crowned eagle, which leads to potential confusion with the African Stephanoaetus coronatus. Due to its rarity, not much is known about its biology or population.
Region
Gran Chaco and adjacent South America
Typical Environment
Occurs from northern and central Argentina through western Paraguay and eastern Bolivia, with rare records in south-central Brazil. Favors dry Chaco woodlands, thorn scrub, open savanna, and forest edges interspersed with pastures. Often seen soaring over open country or perched on emergent trees and utility structures. Nests in tall trees within relatively undisturbed patches of woodland.
Altitude Range
0–1500 m
Climate Zone
Subtropical
Ease of Keeping
Beginner friendly: 1/5
Also called the crowned solitary eagle, this large raptor inhabits the dry forests and savannas of the Gran Chaco in South America. Its common name can cause confusion with Africa’s crowned eagle (Stephanoaetus coronatus), a different species. It is scarce and secretive, with low reproductive output, and is threatened by habitat loss, persecution, and collision with power lines.
A Chaco eagle in captivity.
A mounted specimen of a juvenile Chaco eagle.
Temperament
solitary and territorial
Flight Pattern
soaring glider
Social Behavior
Usually encountered alone or in pairs, holding large territories. Builds large stick nests high in trees; pairs are long-lived and may nest only every other year. Clutch size is typically one egg, and parental care is prolonged.
Migratory Pattern
Resident
Song Description
Generally quiet, but near nests gives piercing whistles and harsh screams. Calls carry over open habitats, especially during displays and territorial interactions.
