This gull was ringed as chick on C Buøya, Nordhorsvær,Sømna, Nordland, Norway (65°19'06"N 011°37'51"E) on August 3, 2017. The gull colony it was ringed in consists only of breeding Baltic Gulls (Larus fuscus fuscus). This taxon is rare in The Netherlands, but probably often escapes detection between the far more abundant graellsii and intermedius Lesser Black-backed Gulls.