Family Hummingbirds (Trochilidae)

Least Concern

Green Thorntail (Discosura conversii)


French: Coquette à queue fine German: Grüne Fadenelfe Spanish: Rabudito verde

Trochilus Conversii

Bourcier and Mulsant

, 1846,

Bogotá, Colombia




Mountains of Costa Rica and Panama S through W Colombia to SW Ecuador.

Descriptive notes

Male c. 10 cm (including long tail), female c. 6·6–7·5 cm; c. 3 g. Male has short, straight bill, black; crown glittering green, rest of upperparts green... read more


Mostly silent. A short, high “tsip” or “seep” when feeding, and soft squeaky chipping during... read more


Humid forest, forest edge and at flowering trees in clearings up to 1000 m, occasionally 1400 m.... read more

Food and feeding

Feeds on nectar of flowering Clusia, Inga, Mimosa, Pithecellobium and Warscewiczia. Gleans... read more


Probably Nov–Apr (Costa Rica). No further information available.


Sedentary, some seasonal altitudinal dispersal likely.

Status and conservation

Not globally threatened (Least Concern). CITES II. Uncommon throughout most of range. In common with congeners, restricted to forest habitats which remain under threat of... read more

Recommended citation

Züchner, T. & Boesman, P. (2020). Green Thorntail (Discosura conversii). 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).