Family Bulbuls (Pycnonotidae)

Least Concern

Bare-faced Bulbul (Pycnonotus hualon)


French: Bulbul hualon German: Kahlgesichtbülbül Spanish: Bulbul caripelado

Pycnonotus hualon

Woxvold et al.

, 2009,

Pha Lom (16°58’13” N, 105°48’48” E), at c. 295 m, south of Ban Nonsomphou, Vilabouli district, Savannakhet Province, central Laos


Highly distinctive species, only recently described#R; may have escaped earlier detection as seems to be restricted to a generally inhospitable and very poorly explored habitat; may require a separate, monotypic genus; further study required. Although original description mentions similarity to several species and species groups within present genus, it appears not to be a distinctive race or morph of any of them; subsequent records at numerous sites over several years have now refuted any claims of possible hybrid origin. Monotypic.


Limestone karst, both massive and as small isolates rising from the plains, from Luang Prabang to Salavan Provinces, in C Laos.

Descriptive notes

19 cm; 33–41 g. A dull olive to greyish-brown bulbul characterized by near absence of contour feathering on top and side of head. Adult male has bare skin of head... read more


Commonest vocalization a brief series of whistled, dry bubbling notes, sometimes followed by a... read more


Almost certainly entirely restricted to limestone karst terrain with scattered vegetation of... read more

Food and feeding

Fruit (common in the habitat) probably constitutes principal food; seen to eat figs (Ficus) and berries of the woody shrub ... read more


No information. Fieldwork has been conducted only during dry season.


No information. Its occurrence on small karst isolates amid extensive agriculture (now) and lowland... read more

Status and conservation

Not globally threatened. Restricted-range species: present in Southern Laos Secondary Area. Population size not known. Presumably occurs across entire limestone belt of C... read more

Recommended citation

Fjeldså, J. & Bonan, A. (2019). Bare-faced Bulbul (Pycnonotus hualon). 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 19 August 2019).