- Nisaetus lanceolatus
56–64 cm (22-25¼ in)
- Rufous-brown head and upperparts
- Dark brown wings
- Cream chest with dark brown vertical streaks
- Black and white barred underparts
- Broad, round-tipped wings
Juveniles: white head and underparts
Primary and secondary forests, from sea-level to around 2000 m.
There is little information, but they are believed to prey on small and medium-sized birds, mammals, snakes and lizards.
They are thought to breed from May to August.
- Clements, J. F., T. S. Schulenberg, M. J. Iliff, D. Roberson, T. A. Fredericks, B. L. Sullivan, and C. L. Wood. 2018. The eBird/Clements checklist of birds of the world: v2018. Downloaded from http://www.birds.cornell.edu/clementschecklist/download/
- Handbook of the Birds of the World Alive (retrieved October 2016)
- BirdForum Opus contributors. (2021) Sulawesi Hawk-Eagle. In: BirdForum, the forum for wild birds and birding. Retrieved 18 May 2021 from https://www.birdforum.net/wiki/Sulawesi_Hawk-Eagle