Authors
Włodzimierz Meissner
Avian Ecophysiology Unit, Department of Vertebrate Ecology & Zoology, University of Gdańsk, Gdańsk, Poland
Izabela Fischer
Avian Ecophysiology Unit, Department of Vertebrate Ecology & Zoology, University of Gdańsk, Gdańsk, Poland
Szymon Bzoma
Waterbird Research Group KULING, Gdynia, Poland