Family Hummingbirds (Trochilidae)


White-tailed Hummingbird (Eupherusa poliocerca)


French: Colibri du Guerrero German: Weißschwanzkolibri Spanish: Colibrí de Guerrero

Eupherusa poliocerca


, 1871,

Putla, Oaxaca, Mexico


Closely related to E. eximia and E. cyanophrys; sometimes regarded as conspecific with one or other, but morphological differences seem to justify their separation as full species. Monotypic.


Pacific slope of Guerrero (Sierra Madre del Sur) and W Oaxaca, in S Mexico.

Descriptive notes

10–11 cm; 4·5–5·2 g. Male has straight black bill; entire plumage emerald-green; rufous secondaries on dark wings; tail slightly rounded, central... read more


Song a high-pitched, rapid, slightly liquid to squeaky warbling, 2–8 seconds in duration, faster... read more


Inhabits humid evergreen forest, cloudforest, forest edges, as well as open woodland and... read more

Food and feeding

Feeds on nectar of flowering Inga, Kohleria, Lobelia, Malviscus, Manettia, Psittacanthus... read more


One nest has been found in Oct, birds in breeding condition in Feb and Apr. No further data available.


Sedentary; some altitudinal dispersal likely.

Status and conservation

VULNERABLE. Previously listed as Endangered. CITES II. Restricted-range species: present in Sierra Madre del Sur EBA. Still locally common within its restricted range.... read more

Recommended citation

Züchner, T., de Juana, E. & Boesman, P. (2020). White-tailed Hummingbird (Eupherusa poliocerca). 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 25 February 2020).