Family Hummingbirds (Trochilidae)

Least Concern

Short-tailed Woodstar (Myrmia micrura)


French: Colibri à queue courte German: Kurzschwanzelfe Spanish: Colibrí colicorto

Calothorax micrurus


, 1854,



Affinities unclear; external morphology suggests closest to genus Chaetocercus, and sometimes placed therein. Monotypic.


W Ecuador (S from SW Manabí and I La Plata) to NW Peru (S to La Libertad).

Descriptive notes

6–6·5 cm; 2·7–3·3 g. Male has short, slightly decurved black bill; upperparts shining olive-green; chin white, throat iridescent violet to... read more


Song a combination of very high-pitched, drawn-out, rising “swee” notes and short faint liquid... read more


Occurs in coastal arid scrub vegetation, in dry valleys and gardens; most numerous below 200 m;... read more

Food and feeding

Nectar of flowering Malvaceae shrubs, Cactaceae, Fabaceae, Caesalpiniaceae (Leguminosae), Boraginaceae (e.g. Cordia lutea)... read more


Mid-Feb to end of May in Ecuador, but nest with chicks in Jul in NW Peru. Tiny cup-shaped nest of brown plant down and spider web is built... read more


Sedentary. During the rainy season less numerous in coastal habitats.

Status and conservation

Not globally threatened. CITES II. Restricted-range species: present in Tumbesian Region EBA. A common species throughout range, with densities of at least 8–12 pairs/... read more

Recommended citation

Schuchmann, K.L., Boesman, P. & Kirwan, G.M. (2020). Short-tailed Woodstar (Myrmia micrura). 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 17 February 2020).