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Alternative names: Black Solitary Eagle, Montane Solitary Eagle
- Buteogallus solitarius
63-76cm. Dark grey, appearing black, with white markings on the tail. The juvenile is mottled brown and tan. with markings around the eyes.
Two subspecies are recognized:
- B. s. sheffleri
- B. s. solitarius
Formerly placed in the genus Harpyhaliaetus.
Mountainous or hilly forests.
- Clements, JF. 2011. The Clements Checklist of Birds of the World. 6th ed., with updates to August 2011. Ithaca: Cornell Univ. Press. ISBN 978-0801445019. Spreadsheet available at http://www.birds.cornell.edu/clementschecklist/downloadable-clements-checklist
- SACC proposal] for taxonomy including this species
- Identification of the black hawks (Buteogallus)
- BirdForum Opus contributors. (2023) Solitary Eagle. In: BirdForum, the forum for wild birds and birding. Retrieved 30 November 2023 from https://www.birdforum.net/opus/Solitary_Eagle