Stelgidillas gracilirostris
The Slender-billed Greenbul, *Stelgidillas gracilirostris*, is a medium-sized passerine bird belonging to the Bulbul family (Pycnonotidae), characterized by its rather uniform olive-green plumage. Measuring approximately 18-20 cm (7-8 inches) in length and weighing 25-35 grams, its most distinctive feature is its comparatively long, slender, and slightly decurved bill, which is dark above and paler below, setting it apart from other greenbuls. The head and upperparts are a darker olive-green,...
This species primarily inhabits lowland rainforests, including primary and mature secondary growth, as well as dense forest edges and riparian zones. It typically occurs from sea level up to elevations of about 1,500-2,000 meters in certain highland areas.
The diet of the Slender-billed Greenbul consists mainly of small fruits, berries, and various insects such as caterpillars, beetles, and ants. It forages by gleaning from leaves and branches and plucking fruit.
Slender-billed Greenbuls are diurnal and often observed singly, in pairs, or as active participants in mixed-species foraging flocks, particularly in the mid-canopy and sub-canopy layers. They are agile foragers, primarily gleaning insects from foliage and branches with their specialized bill, an...
The Slender-billed Greenbul is widely distributed across West and Central Africa, extending from Sierra Leone and Guinea eastward through Ghana, Nigeria, Cameroon, and Equatorial Guinea, encompassing Gabon, the Central African Republic, Congo, and the Democratic Republic of Congo. Its range also ...
Least Concern
- The Slender-billed Greenbul's exceptionally long and slender bill is a key adaptation, allowing it to probe crevices and access food sources that might be unavailable to other bulbuls. - Despite its relatively plain appearance, its distinctive bill is the most reliable field mark for identifica...