- Nisaetus nanus
43–58 cm (17-22¾ in)
- Rufescent sides of head with blackish streaks
- Dark crest broadly tipped white
- Three dark bands on tail
- Buffish-white base to underside flight feathers
- Warm buffish coverts with narrow dark barring
The subspecies stresemanni is only found on the Nias island of Sumatra.
It was formerly placed in the genus Spizaetus.
Two subspecies are recognized:
- N. n. nanus:
- N. n. stresemanni:
- Nias Island (off western Sumatra)
Evergreen rain forests, oil palm plantations, peat swamps and riverine forests.
It is thought they may specialise in birds, but their prey seems to include bats, squirrels, lizards, skinks and rats too.
- Clements, J. F., T. S. Schulenberg, M. J. Iliff, D. Roberson, T. A. Fredericks, B. L. Sullivan, and C. L. Wood. 2016. The eBird/Clements checklist of birds of the world: v2016, with updates to August 2016. Downloaded from http://www.birds.cornell.edu/clementschecklist/download/
- BirdLife International
- BirdForum Opus contributors. (2021) Wallace's Hawk-Eagle. In: BirdForum, the forum for wild birds and birding. Retrieved 11 April 2021 from https://www.birdforum.net/wiki/Wallace%27s_Hawk-Eagle