Small, striking eagle with broad, rounded wings. Broad white wing bands and base to tail prominent in flight. At rest, note dark head and chestnut underparts. Darker overall than similar Crested Serpent-Eagle and appears longer-winged in flight. Adult Blyth’s Hawk-Eagle can be similar in flight, but appears smaller-headed, with more intricately-marked underwings. Restricted to north Bornean montane forest, where it can often be seen soaring above ridges. Gives a short, shrill scream.