Vagrants of Common Shelduck in Sumy region. - N.P. Knysh. - Berkut. 17 (1-2). 2008. - P. 188.
Two males and a female were observed on fish ponds near the town of Konotop on 25.04.2008. Previous records in 1976–1988 are described. It is possible that there is an irregular passage of birds from northern populations. [Russian].