Family Bulbuls (Pycnonotidae)

Least Concern

White-bearded Greenbul (Criniger ndussumensis)


Taxonomy

French: Bulbul de Reichenow German: Weißkehl-Haarbülbül Spanish: Bulbul barbiblanco
Taxonomy:

Criniger verreauxi ndussumensis

Reichenow

, 1904,

Ndussuma country, Kinjawanga and Bellima, near Beni, DRCongo

.

Taxonomic history confused. On basis of structural, behavioural and vocal similarities, sometimes treated as a race of C. olivaceus (which responds to playback of song of present species), but significant plumage differences suggest that, although clearly closely related, the two are better treated as distinct species#R; this interpretation is supported by results of molecular studies. Alternatively, has often been considered conspecific with C. calurus because of close similarity in appearance to sympatric races of latter, but differs in both voice and morphology (suspected differences in foraging behaviour not proven, owing to difficulty of distinguishing between the two species in the field)#R. Published reports of hybridization with C. calurus (race emini) in NE DRCongo seem to be based on observation of individuals apparently showing combination of characters then thought to be restricted to each form. Further work needed. Monotypic.

Distribution:

SE Nigeria E to E DRCongo (Semliki and Itombwe), S to coastal Congo; not known to occur across much of intervening region in S part of this range.

Descriptive notes

c. 18 cm; 24·5–31 g. Relatively small bulbul with conspicuous tufted white throat feathers, sometimes puffed in display. Has crown olive-brown, greyer on... read more

Voice

Song 3 short harsh syllables on even, relatively low pitch, emphasis on last syllable, “whut-... read more

Habitat

Primary and well-developed secondary lowland evergreen and semi-deciduous forest and swamp-forest.... read more

Food and feeding

Mainly insectivorous; recorded as taking figs (Ficus) in PRCongo. Usually in pairs or family parties; often in mixed-species... read more

Breeding

Fledgling recorded in Feb in Cameroon. No other definite information.

Movements

No information; likely resident.

Status and conservation

Not globally threatened. Status uncertain, as confused with C. calurus; known to be less common and widespread than that species. Range is, however, extensive, and... read more

Recommended citation

Fishpool, L. & Tobias, J. (2017). White-bearded Greenbul (Criniger ndussumensis). 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 https://www.hbw.com/node/58011 on 17 November 2017).