Family Bulbuls (Pycnonotidae)

Least Concern

Slender-billed Greenbul (Stelgidillas gracilirostris)


French: Bulbul à bec grêle German: Schmalschnabelbülbül Spanish: Bulbul picofino

Andropadus gracilirostris


, 1844,

island of Bioko


Proposed races congensis (Cameroon E to DRCongo and Tanzania) and chagwensis (Uganda) show barely perceptible and inconstant differences in colour tone from nominate, and not satisfactorily distinguishable. Name poensis is a synonym of nominate. Two subspecies recognized.

Subspecies and Distribution
  • S. g. gracilirostris (Strickland, 1844) – SW Senegal and Guinea-Bissau E, including Bioko, to S South Sudan, C Uganda and W Kenya, S to NW Angola, SC DRCongo, Rwanda and N Burundi, also extreme NW Tanzania.
  • S. g. percivali (Neumann, 1903) – C Kenyan highlands.
  • Descriptive notes

    c. 18 cm; male 24–37 g, female 26–40 g. A medium-sized, two-toned, slender, relatively long-tailed greenbul. Nominate race has top of head olive-brown, lores and... read more


    Clear, distinctive, downslurred, extended whistle, “tseeeeu” or “peeuuu”,... read more


    Primary and secondary evergreen and semi-deciduous forest, gallery forest, regenerating farmbush,... read more

    Food and feeding

    Fruits, including berries, and arils, also seeds; also arthropods, including orthopterans, mantids, bugs (Hemiptera), moths (Lepidoptera),... read more


    Nesting recorded in Jun and Sept–Jan in Sierra Leone, Oct and Dec in Liberia, Sept, Nov and Jan–Feb (juveniles early Sept) in... read more


    Little information; thought to be sedentary in Gabon.

    Status and conservation

    Not globally threatened. Generally common and widespread. Density in Gabon estimated at 7–9 pairs/km². Adapts well to secondary habitats. Well represented in protected... read more

    Recommended citation

    Fishpool, L. & Tobias, J. (2020). Slender-billed Greenbul (Stelgidillas gracilirostris). 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 January 2020).