@misc{Jadczyk_Piotr_Józef_Winter_1994,
 author={Jadczyk Piotr Józef},
 volume={29},
 editor={Polska Akademia Nauk. Muzeum i Instytut Zoologii},
 number={1},
 copyright={Rights Reserved - Free Access},
 address={Warszawa},
 journal={Acta Ornithologica},
 howpublished={online},
 year={1994},
 publisher={Muzeum i Instytut Zoologii PAN},
 language={eng},
 language={pol},
 type={Text},
 title={Winter roosting of Rooks Corvus frugilegus in Wrocław},
 URL={http://www.rcin.org.pl/Content/42890/PDF/WA058_59884_P257-T29_Acta-Ornith-Nr-1-4.pdf},
 keywords={Rook, wintering, Poland, Wrocław, roosting, birds, Corvus frugilegus, Corvidae, Aves},
}