Family Tetrakas (Bernieridae)

Near Threatened

Wedge-tailed Tetraka (Hartertula flavoviridis)


French: Jery à queue étagée German: Keilschwanz-Madagaskarsänger Spanish: Jiji colicuña
Other common names: Wedge-tailed Jery

Neomixis flavoviridis

E. J. O. Hartert

, 1924,

Analamazaotra, Madagascar


Has been treated within the genus Neomixis. Monotypic.


Locally in forested areas of E Madagascar (except Sambirano region).

Descriptive notes

12–13 cm; 9–11 g. A fairly small, slender, warbler-like bird with long and graduated tail. Has pale eyering and supercilium, olive-green crown and upperparts;... read more


Shrill, reedy and nasal “tsee zeeezeezeezeezeezeezee zee zee”, sometimes preceded by... read more


Dense rainforest understorey. Most frequent at middle altitudes, 500–1400 m; scarce at lower... read more

Food and feeding

Mainly insects. Forages in forest understorey, moving actively through foliage, gleaning insects from leaves, sometimes hanging upside-down... read more


Little known. Recorded in Jan. Nest an oval ball, entrance on top at side, built from grasses and other vegetation, suspended 1–2 m... read more


Little known; presumably mostly resident.

Status and conservation

Not globally threatened. Currently considered Near-threatened. Nowhere common; range fragmented. Perhaps at risk from habitat loss. Middle-altitude forest is less threatened... read more

Recommended citation

Ryan, P. (2019). Wedge-tailed Tetraka (Hartertula flavoviridis). 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 20 March 2019).