See also:
Motacilla flava Linnaeus, 1758
Motacilla flava beema Sykes, 1832
Motacilla flava flava Linnaeus, 1758
Motacilla flava thunbergi Billberg, 1828
Motacilla flava zaissanensis Polyakov, 1911

No Synonyms

Description. The all head, including the forehead, nape, ear coverts and chin is white.

Distribution. Occurs on migration in southern and south-eastern Kazakhstan. On Chokpak Pass migrates 15 April – 9 May and one record 24 September; on Sorbulak lake 17 April – 15 May and one record 12 September. One ringed at Alakol lake 8 July 1981. One male recorded 10 May 2003 at Kolshengel.

References

Gavrilov E. I., Gavrilov A. E. "The Birds of Kazakhstan". Almaty, 2005
Э.И.Гаврилов. "Фауна и распространение птиц Казахстана". Алматы, 1999.