Family Hummingbirds (Trochilidae)

Least Concern

White-tailed Emerald (Elvira chionura)


French: Colibri elvire German: Grüner Elvirakolibri Spanish: Esmeralda de Elvira

Trochilus (Thaumatias?) chionura


, 1851,

David, Chiriquí, Panama




Pacific slope from SW Costa Rica to C Panama (Coclé); reaches Caribbean slope locally in Panama.

Descriptive notes

7·5–8 cm; male 3·3 g, female 3·1 g. Bill nearly straight, black except for pinkish basal half of mandible, feet dark grey. Male bronzy green above... read more


Song a prolonged, thin scratchy twittering mixed with buzzing or gurgling notes, rising and falling... read more


Moist to wet mountain forest, shaded coffee plantations and gardens, old second growth; in forest,... read more

Food and feeding

Nectar of flowering shrubs and vines along forest borders and within forest. Takes small aerial arthropods by hawking.


Jun–Nov during wet season. Breeding males form small leks of 2–5 or fewer, though often solitary. Nest apparently undescribed.


Not well understood; outside breeding season recorded both above and below breeding areas in Costa... read more

Status and conservation

Not globally threatened. CITES II. Restricted-range species: present in Costa Rica and Panama Highlands EBA. Locally common in lower part of La Amistad National Park and at... read more

Recommended citation

Stiles, F.G. & Boesman, P. (2020). White-tailed Emerald (Elvira chionura). 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 28 January 2020).