The #SiberianChiffchaff #PhylloscopusCollybitaTristis is a leaf-warbler which is usually considered a subspecies of the common chiffchaff, but may be a species in its own right.

Siberian chiffchaff breeds in Siberia east of the Pechora River and winters in the lower Himalayas.

It is a dull bird, grey or brownish above and whitish below, with little yellow in the plumage, and the buff-white supercilium is often longer than in the western subspecies. It has a higher pitched suitsistsuisit song and a short high-pitched cheet call.

via Flickr http://flic.kr/p/waNu3P