Dark Hawk-Cuckoo

Hierococcyx bocki

Large long-tailed cuckoo with a distinctly raptor-like appearance. As with most other hawk-cuckoos, often perches deep in tall trees; best detected by its song, a piercing and repetitive “wit-CHEW-WEE”. If seen well, note adult’s dark gray back, rufous chest, and barred white belly; juvenile has streaked throat and browner upperparts. Found in montane and foothill forest.

Taxonomy

Scientific name
Hierococcyx bocki
Authority
Wardlaw-Ramsay, RG, 1886
Order
Cuculiformes
Family
Cuculidae
Genus
Hierococcyx

Range and habitat

Migration
Resident species

Conservation

Population trend
stable

Photos

Distribution

Bird Calls

Other Birds

Yellow-bellied Dacnis

Yellow-bellied Dacnis

Dacnis flaviventer

Small, sharp-billed tanager of tropical lowlands. Males have a black back, bright yellow underparts, and a black mask. Females are brown above and dull yellow below. Both sexes have bright red eyes. Females similar to other female dacnis, but note red eyes and higher contrast between brown upperparts and lighter tan underparts. Found in young rainforest, forest edges, and similar open forested habitats, where it forages in the canopy singly or in pairs, often joining mixed-species flocks.

Dayak Blue Flycatcher

Dayak Blue Flycatcher

Cyornis montanus

A medium-sized flycatcher with strikingly different male and female plumages. Male is beautifully colored, with deep blue upperparts, mostly orange underparts, and a white belly. Female is much duller, with a grayish head, gray-brown wings, a rufous tail, and rufous underparts. Scarce and local in the understory of hill forest. Song is jumble of melodious warbling and whistling notes. The calls are loud “chek” or “sit” notes, and are often mixed into the song. Similar to Bornean Blue Flycatcher, but darker, especially on the belly (in both sexes) and back (in the male). Also similar to Sunda Blue Flycatcher, but darker overall and shorter-billed. Dayak Blue Flycatcher is further distinguished by the less extensive black chin patch of the male and the rufous rather than blue tail of the female.

Dusky Sunbird

Dusky Sunbird

Cinnyris fuscus

A small sunbird. The male is dark overall, with a pale lower belly and orange tufts at the shoulder that are sometimes hidden. The female is plain gray-brown with a paler lower belly. Singles and pairs prefer arid scrub and savanna, feeding on insects and nectar. The species is nomadic and can irrupt in large numbers into areas where it is normally irregular, often on the fringes of its range. The female Dusky Sunbird has paler underparts than the similar female Southern Double-collared Sunbird.

Start Your Bird Watching Journey

Identify a bird outdoors and keep the field guide close for your next observation.

Dark Hawk-Cuckoo | BirdLens