- Hierococcyx bocki
- Brown above with narrow rufous bars
- Ashy-grey crown, nape and neck
- Brownish grey and black barred tail
- Black chin, white throat and rufous breast, breast sometimes dark-streaked
- White belly with blackish bars
- Yellow eye-ring
Juveniles have barred rufous and brown upperparts, a grey forehead, a white nape, a rufous and black barred tail and have buff underparts streaked with black teardrops.
Large Hawk-Cuckoo is slightly larger, has a streaked throat and breast and no rufous bars on upperparts.
Feeds on insects, mainly caterpillars. Takes also berries.
Forages in the canopy, mainly solitary.
A resident species..
- Clements, J. F., T. S. Schulenberg, M. J. Iliff, B.L. Sullivan, C. L. Wood, and D. Roberson. 2012. The eBird/Clements Checklist of Birds of the World. 6th ed., with updates to October 2012. Ithaca: Cornell Univ. Press. ISBN 978-0801445019. Spreadsheet available at http://www.birds.cornell.edu/clementschecklist/downloadable-clements-checklist
- Del Hoyo, J, A Elliot, and J Sargatal, eds. 1997. Handbook of the Birds of the World. Volume 4: Sandgrouse to Cuckoos. Barcelona: Lynx Edicions. ISBN 978-8487334221
- BirdForum Opus contributors. (2021) Dark Hawk-Cuckoo. In: BirdForum, the forum for wild birds and birding. Retrieved 14 April 2021 from https://www.birdforum.net/wiki/Dark_Hawk-Cuckoo