Used materials:

Domum>>> birds of sweden.

Latvijas putni.

Multilingual Animal Glossary of Unveiled Synonyms.

The Birds of Kuwait.

Multilingual North European Bird Dictionary.

Avibase - The World Bird Database.

Bird Names in Chinese, Japanese, and Vietnamese.

LOGOS - Multilingual Translation Portal.

Wikipedia.

Chăvash halăh saychĕ - Chuvash People's site.

SHUMKAR.RU

Zabelin VI, Zabelina GA, Tsetsegdar U. Shestiyazychny dictionary of names of birds of Tuva and western Mongolia. Atlanta: Publishing House of SB RAS, 1999.

Prokofiev SM The nature of Khakassia. Abakan: Hakasskoe book. publishing house in 1993.

Fomin VE, Bold A. Catalog birds Mongolian People's Republic. Moscow: Science, 1991.

Balát F. Klíč k určování našich ptáků v přírodě. Praha: Academia, 1986.

Ferianc O. Vtáky Slovenska. Bratislava: Veda, 1977.

Makatsch W. Die Eier Der Vögel Europas. Neumann Verlag, 1974.