Spangenberg, E.P., and Feigin, G.A. (1936) The birds of low-stream of Syrdarya and of adjacent areas. Collection of works of Zoological Museum of Moscow State University. Moscow. 3: 41-184. (In Russian).
Khrokov, V.V. About number of birds at delta lakes and at Syrdarya mouth in spring 2001 (unpublished) (in Russian).
BirdLife International (2023) Important Bird Areas factsheet: Syrdarya Delta Lakes. Downloaded from
http://www.birdlife.org on 25/03/2023.