- Geranoaetus melanoleucus
60-76 cm (23½-30 in) Female larger
- White underparts with fine blackish stripes
- Dark grey upperparts with a blackish, brownish or bluish hue
- Dark breast
- Ash-grey and white area on wings
- Very short black tail
Female: rufous tint to both the upper and underwing secondaries
Immature: tail is not nearly as short as in adults; deep brown upperparts, lacks light wing patch; white or light buff underparts, heavy dark streaks on breast, dark bars on belly and thighs. Full adult plumage is acquired at 4-5 years old.
There are 2 subspecies:
- G. m. australis: smaller, white with fine dark barring below
- Andes of western Venezuela to Tierra del Fuego
- G. m. melanoleucus:
A variety of habitats, in open and mountainous areas.
The diet includes mid-sized mammals and birds.
The large stick nest is constructed in high trees or on rocky cliffs. The clutch of 1-3 eggs is incubated for 28 days.
- Clements, J. F., T. S. Schulenberg, M. J. Iliff, S. M. Billerman, T. A. Fredericks, B. L. Sullivan, and C. L. Wood. 2019. The eBird/Clements Checklist of Birds of the World: v2019. Downloaded from http://www.birds.cornell.edu/clementschecklist/download/
- BirdForum Member observations
- BirdForum Opus contributors. (2021) Black-chested Buzzard-Eagle. In: BirdForum, the forum for wild birds and birding. Retrieved 12 April 2021 from https://www.birdforum.net/wiki/Black-chested_Buzzard-Eagle