Sulphur-bellied Warbler

The sulphur-bellied warbler, earlier known as the olivaceous leaf warbler, is a leaf warbler found in the Palearctic, in Afghanistan, Kazakhstan, Kyrgyzstan, Mongolia, Central Asian Russia, Tajikistan and Turkmenistan. Like other leaf warblers it gleans insects from small branches and leaves. It is found in rocky hill and scrub forest habitats in small groups, tends to forage low in the vegetation, sometimes hopping on the ground, and has a single-note cheep call (Wikipedia, general species account).