See also:
Cettia cetti Temminck, 1820
Cettia cetti orientalis Tristram, 1867

Synonyms

Cettia cetti scalenura Severtzov, 1873
Cettia cetti cettioides Hume, 1873
Cettia cetti stoliczkae Hume, 1874
Cettia cetti semenovi Zarudny et Loudon, 1903

Description. The upper parts and grey flanks are lighter than on orientalis. The crown is greyish-brown, more light; the grey tinge on the neck flanks is more expressed than on orientalis.

Distribution. Breeds and occurs on migration in the south half of Kazakhstan from the mouth of Syrdarya river up to Zaysan depression, in north up to Telekol lakes, Chu valley, Ust-Kamenogorsk area and foothills of Southern Altai. In 2001 the male songs recorded in eastern part of Kazakh upland, near Zharma village; on western part of Kalbinskiy Altai; and in upper course of Bukhtarma river. In winter the quiet songs were heard on Chushkakol lake (3 February 2004) and at Karachengel (10 February 2004).

References

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