Family Hummingbirds (Trochilidae)


Esmeraldas Woodstar (Chaetocercus berlepschi)


French: Colibri de Berlepsch German: Esmeraldaselfe Spanish: Colibrí de Esmeraldas

Chætocercus Berlepschi


, 1889,



Frequently placed in genus Acestrura along with C. mulsant, C. bombus, C. heliodor and C. astreans, but no evidence in external morphology justifies treatment in a genus separate from C. jourdanii. Form C. harterti, known only from type specimen from Colombia, may be of hybrid origin. Monotypic.


Pacific slope of Andes of W Ecuador (W Esmeraldas, Manabí, W Guayas).

Descriptive notes

c. 6–7 cm. Male has straight black bill; upperparts coppery green; gorget iridescent rosy violet, breast greyish-white; tail forked, outer rectrices reduced to shafts.... read more


Poorly known. Calls while feeding and hovering include a series of single liquid “tsit” notes or a... read more


Edges of lowland moist forest and second growth, from sea-level to 500 m, based on locality data on... read more

Food and feeding

Has been recorded as feeding on nectar of flowering Inga and Munitingia calabura. Insects are caught in the air by... read more


Season Dec–May. Nest, a tiny cup of balsa (Ochroma pyramidalis) fibres and composite seeds (Asteraceae) held together with... read more


Unknown; altitudinal dispersal most likely.

Status and conservation

ENDANGERED. CITES II. Restricted-range species: present in Tumbesian Region EBA. This hummingbird inhabits one of the most threatened forest habitats within the Neotropics.... read more

Recommended citation

Züchner, T., Boesman, P. & de Juana, E. (2019). Esmeraldas Woodstar (Chaetocercus berlepschi). 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 21 May 2019).