The first impression from this green warbler is that has a compact, almost stocky shape, reminiscent of a Goldcrest or Firecrest. The structure suggests this is a small warbler. There are plenty of field characters on show here, not least the long, bold, yellow supercilium. Then there are the two clear transverse wing-bars and the white-fringed tertials and primary tips. The face pattern screams Phylloscopus and the other features rule out several species, pointing the way to Yellow-browed, Hume’s Leaf and Pallas’s Leaf Warblers. The latter has a clear yellow central crown stripe lacking here, as well as a brighter supercilium in front of the eye. Hume’s is an altogether (though subtly) duller bird. This is a typical Yellow-browed Warbler.
KEY FEATURES Bright green upperparts, pale underparts Two clear wing-bars Wings neatly tipped with white on tertials and primaries Prominent long, pale yellowish supercilium Bright yellow supercilium and throat