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Dark-throated Oriole - BirdForum Opus

Revision as of 08:56, 6 September 2023 by THEFERN-13145 (talk | contribs) (alt tax, desc)
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Photo by TSWong
Tawau, Sabah, Malaysia, August 2006

Includes: Ventriloquial Oriole

Oriolus xanthonotus

Identification

17-19 cm. Fairly typical small oriole, male distinguished by black "hood".

  • underparts with coarse black spots aligned longitudinally to form loose streaks
  • lower back, upper and under tail coverts yellow
  • tail dark with under tail terminal yellow spots on central feathers
  • bill pink
  • eye (dark) red
  • eye ring narrow, may appear grey or yellowish
  • legs and feet grey

Male

  • head, wings and chest black forming a "hood"
  • tail black where not yellow
  • back and mantle yellow

Female

  • crown may have light longitudinal streaking
  • chest and throat streaked like rest of underparts
  • greener (more olive) than male, for example on upper tail
  • upper parts mostly olive green or greyish. Head generally more grey than mantle, wings
  • primaries dark

Distribution

Southeast Asia: found in Indochina, Myanmar, Thailand, Malaysia, Malay Peninsula, Brunei, Philippines, Borneo, Indonesia, Greater Sundas, Sumatra and Java.

Taxonomy

Subspecies consobrinus and persuasus form a deeply genetically divergent clade which may be elevated as "Ventriloquial Oriole", O. consobrinus leaving mentawi and xanthonotus as "Dark-throated Oriole" (strict sense), O. xanthonotus (e.g. [6]). They exhibit vocal and female plumage differences from the other taxa [5].

Subspecies

Clements recognises the following subspecies [1]:

  • O. x. xanthonotus: Southern Myanmar, Thailand, Malaysia, Sumatra, south-western Borneo and Java
  • O. x. consobrinus: "Ventriloquial Oriole". Borneo and adjacent islands. [Male greener. Female with a markedly dark greyer-green head]
  • O. x. mentawi: Mentawi Archipelago and adjacent islands off Sumatra. [Female with darker crown with blackish feather centres]
  • O. x. persuasus: "Ventriloquial Oriole". South-western Philippines (Palawan and Culion)

Habitat

Lowland evergreen and swamp forest and forest edges to 1,220m.

Behaviour

The diet includes fruit and insects.

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. Avibase
  3. BirdLife International
  4. Bird Ecology Study Group
  5. Eaton, JA, B van Balen, NW Brickle, FE Rheindt 2021. Birds of the Indonesian Archipelago (Greater Sundas and Wallacea), Second Edition. Lynx Editions. ISBN978-84-16728-44-2
  6. Gill, F, D Donsker, and P Rasmussen (Eds). 2023. IOC World Bird List (v 13.2). Doi 10.14344/IOC.ML.13.2. http://www.worldbirdnames.org/

Recommended Citation

External Links

GSearch checked for 2020 platform.

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