Scientific name: Hippolais icterina (Vieillot, 1817)
Bird group: Warblers
Field characters. 13 cm. Upperparts green or greenish-olive with darker wings and tail, underparts bright yellow, undertail white. Supercilium yellow, but no dark eye-stripe. Some individuals are duller, sometimes even brown and white without green or yellow. Crown high peaked, with highest part behind eye (compare Melodious Warbler), giving flat-headed appearance. Eye dark, bill long with orangy base, legs bluish-grey (more brownish in Melodious Warbler). Separable from Melodious Warbler by longer primary projection and pale wing-panel, formed by pale edges of inner primaries, but liable to wear off. Usually stays in foliage, but with care can sometimes be approached when singing, when conspicuous orange inside of beak visible.
Voice. Calls 'tec tec tec', or 'hoeit'. Song loud and varied, warbling and strongly imitative. Occasionally resembles Song Thrush, more often almost similar to Marsh Warbler; differs from both in recurring 'dideroiet dideroiet'.
Distribution. Common summer visitor.
Habitat. Parks, large gardens, edges of deciduous woodland, orchards, etc., often in damp areas. Requires shrub and bushes rather than trees.
Food. Insects and berries. Feeds on moderate height in bushes, rarely feeds on the ground, but more often high in trees.