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- Spilornis rufipectus
46-64 cm. Sexes alike.
- head blackish
- upperparts dark brown
- chest rufous to dull brown. May or may not contrast with darker belly area.
- lower belly with mixture of darker brown, rufous and white spotting transitioning to more regular barring in lower areas
- wings dark from above. With dark brown, white and black speckling on underwing coverts, and boldly barred black and white flight feathers from below. Wing is rounded
- tail is boldly barred black and white underneath, showing as black and grey bars from above
- eye, facial skin, cere and legs bright yellow
Treated as a race of Crested Serpent Eagle, Spilornis cheela, by some authors.
- Spilornis r. rufipectus - Sulawesi and adjacent islands
- Spilornis r. sulaensis - Banggai and Sula islands (off eastern Sulawesi)
Forest edge and grassy woodlands.