Family Hummingbirds (Trochilidae)

Least Concern

White-bellied Woodstar (Chaetocercus mulsant)


French: Colibri de Mulsant German: Weißbauchelfe Spanish: Colibrí de Mulsant

Ornismyia [sic] mulsant


, 1843,

Bogotá, Colombia


Frequently placed in genus Acestrura along with C. bombus, C. heliodor, C. astreans and C. berlepschi, but no evidence in external morphology justifies treatment in a genus separate from C. jourdanii. Specific name sometimes misspelt mulsanti; both names published by same author just weeks apart; present name has priority#R. Described form Calothorax decoratus is probably a hybrid between present species and Chaetocercus heliodor. Monotypic.


C & E Andes of Colombia patchily through Ecuador and Peru to C Bolivia (Yungas of Cochabamba).

Descriptive notes

c. 8·5 cm; c. 3·8–4 g. Male has straightish black bill; upperparts dark bluish green, white postocular line behind eye joining broad white band on breast... read more


Calls include a rather low-pitched “djup” note and higher-pitched dull “chip”. In flight, not only... read more


Humid forest edges, highland pastures and cultivated areas, at 1500–2800 m, commonest above... read more

Food and feeding

Little known; feeds on nectar of flowering Agave, Inga trees, Lantana and other small flowers; takes small... read more


One record of a nest at c. 10 m in a tree, Apr (Ecuador). No further information available.


Mainly sedentary; records at 4000 m suggest some seasonal dispersal.

Status and conservation

Not globally threatened. CITES II. Uncommon to locally common, and seems to accept man-made habitats to some extent. Due to its small size the species is easily overlooked... read more

Recommended citation

Züchner, T., Boesman, P. & Kirwan, G.M. (2020). White-bellied Woodstar (Chaetocercus mulsant). 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 22 January 2020).