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=== It is also regularly recorded in west...