About the Authors

Piotr Tryjanowski

piotr.tryjanowski@gmail.com

Affiliation Institute of Zoology, Poznań University of Life Sciences, Wojska Polskiego 71C, 60–625, Poznań, Poland

Tim H. Sparks

Affiliation Institute of Zoology, Poznań University of Life Sciences, Wojska Polskiego 71C, 60–625, Poznań, Poland

Waldemar Biaduń

Affiliation Department of Zoology and Invertebrate Ecology, John Paul II Catholic University of Lublin, Al. Kraśnicka 102, 20–718, Lublin, Poland

Tomasz Brauze

Affiliation Department of Vertebrate Zoology, Faculty of Biology and Environment Protection, Nicolaus Copernicus University, Lwowska 1, 87–100, Toruń, Poland

Tomasz Hetmański

Affiliation Department of Zoology, Pomeranian University, Arciszewskiego 22b, 76–200, Słupsk, Poland

Rafał Martyka

Affiliation Institute of Zoology, Poznań University of Life Sciences, Wojska Polskiego 71C, 60–625, Poznań, Poland

Piotr Skórka

Affiliation Institute of Nature Conservation, Polish Academy of Sciences, Mickiewicza 33, 31–120, Kraków, Poland

Piotr Indykiewicz

Affiliation Department of Zoology and Landscaping, University of Technology and Life Sciences, Ks. A. Kordeckiego 20, 85–225, Bydgoszcz, Poland

Łukasz Myczko

Affiliation Institute of Zoology, Poznań University of Life Sciences, Wojska Polskiego 71C, 60–625, Poznań, Poland

Przemysław Kunysz

Affiliation Przemysl Ornithological Society, Węgierska 6, 37–700, Przemyśl, Poland

Piotr Kawa

Affiliation Institute of Zoology, Poznań University of Life Sciences, Wojska Polskiego 71C, 60–625, Poznań, Poland

Stanisław Czyż

Affiliation Upper Silesian Ornithological Society, pl. Jana III Sobieskiego 2, 41–902, Bytom, Poland

Paweł Czechowski

Affiliation Institute for Tourism and Recreation, State Higher Vocational School in Sulechów, Armii Krajowej Str. 51, 66–100, Sulechów, Poland

Michał Polakowski

Affiliation Department of Environmental Protection and Management, Bialystok University of Technology, Wiejska 45a, 15–351, Białystok, Poland

Piotr Zduniak

Affiliation Department of Avian Biology & Ecology, Faculty of Biology, Adam Mickiewicz University, Umultowska 89, 61–614, Poznań, Poland

Leszek Jerzak

Affiliation Faculty of Biological Sciences, University of Zielona Góra, Prof. Z. Szafrana St. 1, 65–516, Zielona Góra, Poland

Tomasz Janiszewski

Affiliation Department of Teacher Training and Biodiversity Studies, University of Łódz, Banacha 1/3, 90–237, Łódź, Poland

Artur Goławski

Affiliation Department of Zoology, University of Natural Sciences and Humanities in Siedlce, Prusa 12, 08–110, Siedlce, Poland

Leszek Duduś

Affiliation Institute of Nature Conservation, Polish Academy of Sciences, Lower-Silesian Field Station, Podwale 75, 50–449, Wrocław, Poland

Jacek J. Nowakowski

Affiliation Department of Ecology & Environmental Protection, University of Warmia and Mazury in Olsztyn, Plac Łódzki 3, 10–727, Olsztyn, Poland

Andrzej Wuczyński

Affiliation Institute of Nature Conservation, Polish Academy of Sciences, Lower-Silesian Field Station, Podwale 75, 50–449, Wrocław, Poland

Dariusz Wysocki

Affiliation Department of Vertebrate Anatomy and Zoology, University of Szczecin, Wąska 13, 71–412 Szczecin, Poland

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: PT PS THS. Performed the experiments: PT WB TB TH RM PS PI ŁM P. Kawa P. Kunysz SC PC MP LJ TJ AG LD JJN AW DW. Analyzed the data: PT THS PS PZ. Contributed reagents/materials/analysis tools: PT LJ PZ. Wrote the paper: PT THS PS PZ.