Family Trogons (Trogonidae)

Near Threatened

Diard's Trogon (Harpactes diardii)


French: Trogon de Diard German: Diardtrogon Spanish: Trogón de Diard

Trogon diardii


, 1832,

Pontianak district, Borneo


One molecular study found a sister relationship between present species and H. erythrocephalus, with H. ardens as sister to these two#R. Proposed race neglectus (Malay Peninsula) included in sumatranus. Two subspecies recognized.

Subspecies and Distribution
  • H. d. sumatranus A. W. H. Blasius, 1896 – S peninsular Thailand, Peninsular Malaysia, Lingga Archipelago and Sumatra.
  • H. d. diardii (Temminck, 1832) – Bangka I (off E Sumatra) and Borneo.
  • Descriptive notes

    34 cm; 101 g. Male nominate race with black head and upper breast, purplish-blue orbital ring, maroon-washed mid-crown to hindcrown, strong pink hind­collar, and pale... read more


    A cadence of 10–12 “kau” notes, the second rather higher than the first and... read more


    Middle and lower storeys of primary and logged forest in lowlands and hills, to 900 m in Peninsular... read more

    Food and feeding

    Caterpillars, beetles, stick-insects, locustids and other Orthoptera, and fruits (including Ficus pellucido-punctata).


    Feb to mid-May in Peninsular Malaysia; mid-May to Aug, probably Sept, in Borneo, but birds in breeding condition also in Feb and Apr. Nest... read more


    Apparently sedentary.

    Status and conservation

    Not globally threatened. Currently considered Near Threatened. Generally uncommon and now threatened by habitat loss in peninsular Thailand, where known for certain from four... read more

    Recommended citation

    Collar, N. (2019). Diard's Trogon (Harpactes diardii). In: del Hoyo, J., Elliott, A., Sargatal, J., Christie, D.A. & de Juana, E. (eds.). Handbook of the Birds of the World Alive. Lynx Edicions, Barcelona. (retrieved from on 15 September 2019).