Slender-billed Greenbul (Stelgidillas gracilirostris) [XC704576]
by Peter Boesman from For\u00eat class\u00e9e du Mont Tonkoui, Man, Montagnes District, Ivory Coast (song)
Slender-billed Greenbul (Stelgidillas gracilirostris) [XC719482]
by Peter Boesman from Kakum National Park, Ghana (call)
Subspecies
Genus formerly submerged in Pycnonotus. Old name "Stelgidillas poensis" is a synonym of present species. Affinities unclear and recent molecular data suggest that this species is remote from all other members of genus and would be better placed in a separate genus.
Proposed subspecies congensis (Cameroon east to DRCongo and Tanzania) and chagwensis (Uganda) exhibit barely perceptible and inconstant differences in colour tone from nominate, and not satisfactorily distinguishable.
The following 2 subspecies are recognised:
gracilirostris (Strickland, 1844) - South-western Senegal and Guinea-Bissau east, including Bioko I, to southern Sudan, central Uganda and western Kenya, south to north-western Angola, south-central DRCongo, Rwanda and northern Burundi, also western Tanzania.
percivali (Neumann, 1903) - Central Kenya Highlands.