Occurrence of the Black-throated Loon Gavia arctica and the Red-throated Loon G. stellata in the Leszno County in the years of 1962–2021

Marcin Przymencki, Klaudia Litwiniak, Grzegorz Lorek, Stanisław Kuźniak

Ornis Polonica 2023, 64: 247–252

https://doi.org/10.12657/ornis.2023.3.5

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