Siberian Chiffchaff

Siberian chiffchaff (Phylloscopus collybita tristis) is a leaf-warbler which is usually considered a subspecies of the common chiffchaff, but may be a species in its own right. Range Siberian chiffchaff breeds in Siberia east of the Pechora River and winters in the lower Himalayas. Status in Europe and North America