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Plain-pouched Hornbill - BirdForum Opus

Photo © by tony.saw
Khao Luang National Park, Krung Ching Waterfall entrance road, Thailand
12 January 2023

Alternative names: Plain-pouched Wreathed Hornbill; Tenasserim Hornbill; Blyth's Wreathed Hornbill

Rhyticeros subruficollis

Aceros subruficollis

Identification

Photo by James Eaton
Temenggor, Malaysia, August 2013

Male 86.5-89.5 cm, female 76-84 cm. A large black hornbill with a short white tail.

Male

  • Dark rufous crown and nape
  • Creamy white sides of head and upper breast
  • Pale yellow bill with red-brown base
  • Wreathed casque
  • Yellow inflatable throat skin

Female

  • All black plumage (except tail)
  • Smaller than male
  • Blue throat sac

Juveniles are similar to adults but they have a smaller bill and no casque

Similar species

Smaller than Wreathed Hornbill. Note also red bill base, lack of ridges on mandibles and missing dark bar on throat sac. This bird has a pale head, neck and tail. The base of its bill is brown.

Distribution

South-east Myanmar, Thailand and northern peninsular Malaysia.
Uncommon to rare in its small range.

Taxonomy

This is a monotypic species.
Sometimes considered conspecific with Wreathed Hornbill.
This species has been placed in the genus Aceros.

Habitat

Mixed deciduous, dry and humid evergreen forests, mainly in the lowlands. Occurs up to 1000m.

Behaviour

Its diet comprises fruit, invertebrates and small vertebrates. Forages mainly in the canopy. It builds nests in holes in tall, broad trees, from January-June.

Vocalisation

Loud keh-kek-kehk.

References

  1. Clements, JF. 2011. The Clements Checklist of Birds of the World. 6th ed., with updates to August 2011. 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. 2001. Handbook of the Birds of the World. Volume 6: Mousebirds to Hornbills. Barcelona: Lynx Edicions. ISBN 978-8487334306

Recommended Citation

External Links

The following link will search the gallery for images of this species. None were found at the time of editing.

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