- Phylloscopus proregulus
Identification
Greenish upperparts and off-white underparts, prominent double wing bars, supercilia and crown stripe, and a lemon-yellow rump.
Distribution
It breeds in southern Siberia, Mongolia, and parts of Tibet and China. It is strongly migratory and winters in subtropical Asia. Prone to vagrancy as far as western Europe in late October and November, despite a 3000 km distance from its breeding grounds. For example, this species occurs in late autumn in Great Britain regularly enough that it is not classified as rare there. The closely related southern species, Pale-rumped Warbler P. chloronotus, and Gansu Leaf Warbler, P. kansuensis, move to lower latitudes in winter, but do not migrate long distances.
Taxonomy
Pallas's Leaf Warbler, Pale-rumped Warbler, Chinese Leaf Warbler, and Gansu Leaf Warbler were until recently united in the Pallas' Warbler sensu lato. Both Pallas's Leaf Warbler and Pale-rumped Warbler have been named Lemon-rumped Leaf Warbler but by different authorities; Lemon-rumped Leaf Warbler is therefore a name that is best avoided due to the possible confusion. The same could, however, be argued for both Pallas's Leaf Warbler and Phylloscopus proregulus, as both were used for the pre-split species. The gallery search below could therefore possibly find images named using the pre-split name but showing other members of the superspecies.
Habitat
Coniferous mountain woodlands.
Behaviour
The nest is built in a tree.
Diet includes insects.
