Family Bush-warblers (Scotocercidae)

Least Concern

Green Hylia (Hylia prasina)


French: Hylia verte German: Gründickichtsänger Spanish: Hilia verde

Sylvia prasina


, 1855,

Mondah River, Gabon


Phylogenetic study#R revealed existence of four or five divergent haplotype groups within this species, representing five reciprocally monophyletic clades with restricted geographical distributions; clearly, further taxonomic study, including genetics, morphology and voice, required. Two subspecies currently recognized.

Subspecies and Distribution
  • H. p. prasina (Cassin, 1855) – Gambia and SW Senegal S to Liberia and E to C & S Ghana and S Togo, and from S Nigeria and S Cameroon E to S South Sudan, W & S Uganda, W Kenya and NW Tanzania (Bukoba) and S to NW & NE Angola and DRCongo (S to Kasai and upper R Congo).
  • H. p. poensis Alexander, 1903 – Bioko.
  • Descriptive notes

    12 cm; 10–16·5 g. A stocky medium-sized warbler. Plumage is dark olive-green above, darkest on top of head, with prominent long, pale yellow supercilium, broad blackish... read more


    Loud, penetrating double or sometimes treble whistle, “tyee tyee”, “tew tew” or “tee tee yeu”,... read more


    Undergrowth of primary and secondary lowland and montane forest, gallery forest, forest-grassland... read more

    Food and feeding

    Insects; recorded prey include beetles (Coleoptera), grasshoppers (Orthoptera), butterflies (Lepidoptera), ants (Hymeoptera) and scale-... read more


    Breeds in Mar–Apr, Jul and Sept in Cameroon, Nov–Apr in Gabon, Sept–Oct in PRCongo, Jan in Sudan; in DRCongo Oct–... read more



    Status and conservation

    Not globally threatened. A wide-ranging and typically common species of forest and moist secondary growth. Common to abundant in Liberia; common to very common, at least... read more

    Recommended citation

    Pearson, D. (2019). Green Hylia (Hylia prasina). 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 May 2019).