KORIDON JAF (1963) Short announcements: New sight-record of the Great Black-headed Gull Larus ichtyaetus. LIMOSA 36 (3): 182-182.

Pallas's Gull Ichthyaetus ichthyaetus Larus ichtyaetus On January 8th, 1963 one of the three of observers of the only specimen of Larus ichthyaetus ever seen in the Netherlands again watched a Gull in the Zwarte Meerreserve near Kampen, Province of Overijssel, which according to him certainly belonged to the same species

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