Dulit frogmouth

The Dulit frogmouth (Batrachostomus harterti) is a little-known species of bird in the frogmouth family, Podargidae, with a patchily recorded distribution in the Borneo montane rain forests to which it is endemic. The species is monotypic.

It is a large, dark, chestnut-brown frogmouth, ranging in length from 32 to 37 cm. The wing length is 220 to 250 mm. It has buffish barring on the crown and a narrow buffish collar on the hindneck. The wing-coverts have large white spots. The underparts are paler brown with buff bars and spots. The sexes are similar.

The only other frogmouth of comparable size in Borneo is the large frogmouth (B. auritus), with which the Dulit frogmouth forms a superspecies. The large frogmouth is slightly larger (with a length of 39 – 42 cm) and paler; the crown is spotted and vermiculated rather than barred, the wing-coverts more heavily spotted, and the underparts plainer. No other frogmouth found in Borneo is more than 30 cm in length.

The call is not known for certain, though Tom Harrisson recorded a call in the Kelabit Highlands, which he attributed to this species, as "tuab tuab". The Kelabit name for the frogmouth is Tu'ub or Suit tu'ub.