The story of one individual of the Glaucous Gull Larus hyperboreus wintering at the Hel Peninsula over 23 years

Arkadiusz Sikora, Zbigniew Kajzer, Waldemar Półtorak

Ornis Polonica 2016, 57: 155–162

https://doi.org/10.12657/ornis.2016.2.4

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