Old World Warblers (Sylviidae)

Green Hylia (Hylia prasina) - HBW 11, p. 643

French: Hylia verte German: Grünhylia Spanish: Hilia Verde
Other common names: Yellow-throated Warbler

Taxonomy: Sylvia prasina Cassin, 1855, Moondah River, Gabon.
Affinities uncertain; firm plumage, somewhat robust build and strong, slightly decurved bill atypical for a warbler, and voice unique. Has often been placed in sunbird family (Nectariniidae), mainly on account of certain anatomical features (brush-tipped tongue, flattened hyoid horns), but general behaviour and nest are not typical of a sunbird; has also been classed as a tit (Paridae) and as a weaver (Ploceidae). Further, has been treated together with the remiziid Tit-hylia (Pholidornis rushiae) in a separate family, Hyliidae, placed next to Nectariniidae; recent mitochondrial DNA ev.. View all taxonomy...

Taxonomy: Sylvia prasina Cassin, 1855, Moondah River, Gabon.
Affinities uncertain; firm plumage, somewhat robust build and strong, slightly decurved bill atypical for a warbler, and voice unique. Has often been placed in sunbird family (Nectariniidae), mainly on account of certain anatomical features (brush-tipped tongue, flattened hyoid horns), but general behaviour and nest are not typical of a sunbird; has also been classed as a tit (Paridae) and as a weaver (Ploceidae). Further, has been treated together with the remiziid Tit-hylia (Pholidornis rushiae) in a separate family, Hyliidae, placed next to Nectariniidae; recent mitochondrial DNA evidence indicates that these two species represent one lineage within the diverse assembly of Old World warblers, and are not closely related to nectariniids. Retention of present species in current family provisional, pending further study. Two subspecies recognized.

Subspecies and Distribution:

  • 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 extreme S Sudan, W & S Uganda, W Kenya and NW Tanzania (Bukoba) and S to N & W Angola and DRCongo (S to Kasai and Upper R Congo).
  • poensis Alexander, 1903 - Bioko I (Fernando Póo).

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