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Bornean Ground Cuckoo - BirdForum Opus

Photo by James Eaton
River Kinabatangan, Sabah, Borneo, May 2009
Carpococcyx radiceus

Carpococcyx radiatus



  • Purple-glossed black head
  • Grey neck sides
  • Dull green mantle and back with purple gloss and coppery-red reflections
  • Rufous lower back and rump with dark bars
  • Unbarred coppery-violet wings and tail
  • Black chin and throat
  • Barred white and black rest of underparts
  • Green bare skin around eye

Sexes similar. Juveniles with greenish brown crown and unbarred below.


South-east Asia: found in Borneo (Brunei, Malaysia and Indonesia).
Rare and patchily distributed.


Bornean Ground Cuckoo is a monotypic [1]. species.
It was previously lumped with Sumatran Ground Cuckoo in Sunda Ground Cuckoo Carpococcyx radiceus (Sibley and Monroe 1990, 1993) which has been split into C. radiatus and C. viridis following Collar and Long (1995), who corrected the name radiceus to radiatus. Quote from IUCN Red List. However, most checklist still use radiceus and the Opus follows.


Humid forest, mainly lowland and hill forest and primary forest on limestone soils.
Occurs at 300 to 1700m.


A terrestrial species but it nests and roosts in trees.


Feeds mainly on insects, takes also fruit. Forages on the ground, running and jumping. It sometimes follows army-ant swarms.


Nests in trees. Only very few data.


A resident species.


  1. 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
  2. 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
  3. BirdLife International

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