Vagrant of the Caspian Tern (Hydroprogne caspia) in Transcarpathian region. - V.M. Gleba. - Berkut. 22 (1). 2013. - P. 60.
An adult bird was observed on a canal in the valley of Tisa river near the village of Esen on 5.09.2000 (48.23 N, 22.16 E). [Ukrainian].
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