Rufous Casiornis

Male shows an entirely blue hood, an olive back, and rufous underparts, including the belly. Female lacks the blue hood. Juvenile is brown and speckled all over. Singles and pairs inhabit the understory of mountain forest, sometimes joining mixed-species flocks. Confined to Sulawesi. Blue throat of male separates it from Sulawesi Blue Flycatcher. Brown back and rufous belly of female distinguishes her from Sulawesi Blue, Snowy-browed, and Rufous-throated Flycatchers. Frequently sings a thrush-like, melodious warble, medium in pitch, with an abrupt end.

Small, little-known owl of montane rainforest. Prominent white brows and horns combined with the fiery orange eyes give it a somewhat fearsome appearance. Perches low in the forest, but like most small owls, easier to locate aurally. Listen for its short croaking bark.

A grayish-brown swiftlet, paler beneath, darker above with a faintly bluish tinge, with a variably grayish rump. Very poorly known from a few specimens and field observations. Generally occurs between 900-1200 meters of elevation, but has been seen at sea level. Very similar to White-rumped Swift, but has a darker gray rump and is much larger. Vocally unknown.