@misc{Buczek_Tomasz_Breeding_1995, author={Buczek, Tomasz and Keller, Marek ( –2012)}, volume={29}, editor={Polska Akademia Nauk. Muzeum i Instytut Zoologii}, number={2}, copyright={Creative Commons Attribution BY 3.0 PL license}, address={Warszawa}, journal={Acta Ornithologica}, howpublished={online}, year={1995}, publisher={Muzeum i Instytut Zoologii PAN}, language={eng}, language={pol}, type={Text}, title={Breeding ecology of the Marsh Harrier Circus aeruginosus in eastern Poland. Cz. 2, Causes of brood losses}, URL={http://rcin.org.pl/Content/43606/PDF/WA058_59894_P257-T29_Acta-Ornith-Nr-2-2.pdf}, keywords={Marsh Harrier, Western Marsh Harrier, Eurasian Marsh Harrier, reproduction, Poland, Eastern, ecology, brood losses, breeding ecology, breeding success, birds of prey, birds, Circus aeruginosus, Accipitridae, Aves}, }