Nesting Ecology of Bewick's Swans on Vaygach Island, Russia

Autor:	Syroechkovsky, Evgeny V., Litvin, Konstantin E., Gurtovaya, Elena N.
Zdroj:	Waterbirds: The International Journal of Waterbird Biology, 2002 Jan 01. 25, 221-226.
Databáze:	JSTOR Journals
Externí odkaz:	https://www.jstor.org/stable/1522356 Zobrazit plný text záznamu