Klossboszanger Phylloscopus ogilviegranti

Unlike “Blyth’s-type” leaf warblers, the similarly-sized but somewhat stouter Kloss’s and Davison’s leaf warblers flick both of their wings at the same time. A brightly-marked leaf warbler with a yolk-yellow brow and crown stripe, and a pale-yellow vent which contrasts with the white breast and belly. Wing bars are also yellow and average stronger than those of Claudia’s, Blyth’s, and Hartert’s warblers. Yellow vent and strong crown stripe may cause confusion with Eastern Crowned Warbler when the latter is migrating, but look for the relatively small, stubby bill and the strong double wing bars of Kloss’s.