Issue 2021-2

Ornis Polonica 2021, 62: 89–100

The importance of the riverbeds of the largest rivers of the middle Vistula basin (central Poland) for breeding avifauna – changes after two decades

Andrzej Dombrowski, Sławomir Chmielewski, Dariusz Bukaciński, Krzysztof Antczak, Marek Murawski, Piotr Pagórski

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Ornis Polonica 2021, 62: 101–112

Woodpecker Picidae numbers in the Suchedniowskie Forest

Piotr Dębowski1, Józef Dukała, Maciej Wachecki, Włodzimierz Szczepaniak, Grzegorz Stojek, Andrzej Staśkowiak, Łukasz Maślikowski

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Ornis Polonica 2021, 62: 113–148

Rare birds recorded in Poland in 2020

Komisja Faunistyczna

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Ornis Polonica 2021, 62: 149–155

Population of the Pygmy Owl Glaucidium passerinum in fragmented forests of the North Podlasie Lowland

Tomasz Tumiel, Paweł Białomyzy, Grzegorz Grygoruk, Oliwier Myka, Piotr Świętochowski

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Ornis Polonica 2021, 62: 156–162

Population trend of House Martins Delichon urbicum in Kielce

Maciej Wachecki, Piotr Wilniewczyc

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Ornis Polonica 2021, 62: 163–168

Changes in the breeding avifauna in the nature reserve “Świnia Góra” in the Świętokrzyskie Forest after 25 years

Marcin Mandziak, Piotr Wilniewczyc, Piotr Dębowski, Bogusław Sępioł

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