Family Bulbuls (Pycnonotidae)

Least Concern

Obi Golden Bulbul (Thapsinillas lucasi)


French: Bulbul d’Obi German: Obibülbül Spanish: Bulbul de Obi

Criniger lucasi

E. J. O. Hartert

, 1903,

Obi, north Moluccas


Until recently considered conspecific with T. longirostris, but this was split into five species#R (now six), present species differing from the three geographically closest taxa as follows. From T. longirostris in its smaller size (effect size for bill –6.03; score 3); large round yellow vs olive-green lores (3); all-olive-grey vs bright yellow-fringed (on inner webs) rectrices (3); narrow whitish vs narrow yellow inner fringes of tertials (1); and yellower ear-coverts (ns[1]). From T. affinis in its smaller size (effect size for bill –4.83; score 2); larger, rounder yellow lores (2); yellower ear-coverts and submoustachial area (at least 1); paler, less extensive olive-green on breast and flanks (ns[1]); lack of yellow tips on uppertail-coverts (ns[1]); olive-grey vs broadly yellow-tipped and -edged rectrices with entire undertail bright yellow (3). From T. mysticalis in its shorter bill, tarsus and tail (effect size for bill –3.22; score 2); larger, much rounder yellow lores (2); lack of yellow partial eyering (2); largely yellow chin to vent vs largely (yellow-tinged) olive chin to vent (3); and yellower ear-coverts (ns[1]). Moreover, limited evidence suggests voice distinctive, and this supported by recent published descriptions#R. Differences from T. chloris described under that species. Monotypic.

What do (1) and (2) mean? Learn more about the scoring system.

Obi (N Moluccas).

Descriptive notes

21 cm. Large, conspicuous, olive-and-yellow bulbul with long bill, weak rictal bristles. Adult has pale olive-green upperparts, including nape and crown, with pale yellow... read more


Three vocalizations have been documented: (a) a series of 3–4 even-pitched, nasal “too-too-too...”... read more


Known from most forest types, both primary and secondary, but also degraded areas, scrubby patches... read more

Food and feeding

No information on diet. Usually observed in pairs or small groups of fewer than ten individuals.


Virtually nothing known, but one seen carrying nest material and another feeding fledged young, both in scrub at the edge of disturbed... read more



Status and conservation

Not globally threatened (Least Concern). Restricted-range species: endemic to a single island within the Northern Maluku EBA. Considered to be relatively common during recent... read more

Recommended citation

del Hoyo, J., Collar, N. & Kirwan, G.M. (2019). Obi Golden Bulbul (Thapsinillas lucasi). 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 16 June 2019).