Family Typical Antbirds (Thamnophilidae)

Least Concern

Uniform Antshrike (Thamnophilus unicolor)


French: Batara unicolore German: Einfarbameisenwürger Spanish: Batará unicolor

Dysithamnus unicolor

P. L. Sclater

, 1859,

Pallatanga, Chimborazo, Ecuador


Closest to T. caerulescens (which see). Re-examination of races needed: nominate and grandior may intergrade in SW Colombia (Nariño); original description of male caudatus may have been based on subadult specimen. Three subspecies recognized.

Subspecies and Distribution
  • T. u. grandior Hellmayr, 1924 – Colombia (locally on all Andean slopes) and E slope in Ecuador and N Peru (S to N San Martín).
  • T. u. unicolor (P. L. Sclater, 1859) – Pacific slope in Ecuador.
  • T. u. caudatus Carriker, 1933 – E Andean slope in C Peru (S San Martín S, locally, to Cuzco).
  • Descriptive notes

    14–16 cm; 20–24 g. Male is uniform blackish-grey; rarely, small white tips on outer rectrices; iris light grey or grey. Female has rufous crown, grey head side,... read more


    Male loudsong a short and slow-paced (e.g. 6 notes, 2·4 seconds) series of low-pitched,... read more


    Understorey of evergreen forest, primarily at 1200–2300 m, occasionally to 600 m and to 2900... read more

    Food and feeding

    Little published. Feeds primarily on insects and other arthropods, but stomach contents also contained seeds. Forages in pairs or singly,... read more


    No previously published information. Nest (from photograph) a deep cup of fibres, with outer layer of green vegetation, possibly moss,... read more


    Presumed resident.

    Status and conservation

    Not globally threatened. Poorly known; considered uncommon to locally fairly common throughout its range. In Colombia, occurs in La Planada Nature Reserve and along the Cali-... read more

    Recommended citation

    Zimmer, K. & Isler, M.L. (2020). Uniform Antshrike (Thamnophilus unicolor). 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 26 February 2020).