
Photo: Francesco Veronesi · CC BY-SA 2.0 (May be cropped or resized)
Hierococcyx vagans
Diet
Insects, especially caterpillars
Habitat
Lowland and hill forest
Range
Malay Peninsula, Sumatra and Borneo
Size
29cm
The moustached hawk-cuckoo is a medium-sized forest cuckoo with hawk-like grey upperparts, barred underparts, a bold dark moustachial stripe and yellow eye-ring. It inhabits lowland and hill forest in the Sundaic region. Usually secretive in the canopy, it feeds on insects, particularly caterpillars, and is detected by its calls. It is a brood parasite that places eggs in other birds' nests (Wikipedia, general species account). It is Nationally Near Threatened (Thailand Red Data 2025).