Olive-backed Pipit

The olive-backed pipit is a small passerine bird of the pipit (Anthus) genus, which breeds across southern, north central and eastern Asia, as well as in the north-eastern European Russia. It is a long-distance migrant moving in winter to southern Asia and Indonesia. Sometimes it is also called Indian pipit or Hodgson's pipit, as well as tree pipit owing to its resemblance with the tree pipit. However, its back is more olive-toned and less streaked than that species, and its head pattern is different with a better-marked supercilium.

Source: Wikipedia