Family Ioras (Aegithinidae)

Near Threatened

Green Iora (Aegithina viridissima)


French: Iora émeraude German: Smaragdiora Spanish: Iora verde

Iora viridissima


, 1850,



Population of Batu Is (off W Sumatra) named as race nesiotis, but considered inseparable from nominate. Taxonomic status of N Natuna Is (S China Sea) population yet to be resolved; currently included in nominate, but further study needed. Two subspecies recognized.

Subspecies and Distribution
  • A. v. viridissima (Bonaparte, 1850) – extreme S Myanmar (S Tenasserim) and SW Thailand S to Malay Peninsula, Sumatra and satellites, N Natuna Is and Borneo.
  • A. v. thapsina Oberholser, 1917 – Siantan I (possibly also other islands), in Anamba Group (E of Peninsular Malaysia).
  • Descriptive notes

    11·5–12·8 cm; one immature 13·8 g. Male is mostly dark olive-green, lightening to pale yellow at rear edge of rump, clear yellow on carpus edge and... read more


    Song a high-pitched, lisping “itsu-tsi-tu tsi-tu”, or (described in Borneo) an even-... read more


    Canopy, including giant emergent crowns, of lowland evergreen rainforest, also of its peatswamp-... read more

    Food and feeding

    Invertebrates, including record of large caterpillar eaten; fledged young were fed on caterpillars. Food items taken from foliage and... read more


    Poorly known. Incubation and nestlings recorded in mid-Apr and early May, and nest-building in mid-May. One nest described as a small, neat... read more



    Status and conservation

    Not globally threatened. Currently considered Near-threatened. Common in areas where forest canopy continuous. Formerly more widespread, but huge amounts of range now... read more

    Recommended citation

    Wells, D. (2019). Green Iora (Aegithina viridissima). 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 20 March 2019).