@misc{Gerstell_Arnold_Advantages_1997,
 author={Gerstell, Arnold and Trost, Charles H.},
 volume={32},
 number={1},
 editor={Polska Akademia Nauk. Muzeum i Instytut Zoologii},
 editor={International Conference on Magpie Ecology (1 ; 1995 ; Zielona Góra)},
 copyright={Rights Reserved - Restricted Access},
 address={Warszawa},
 journal={Acta Ornithologica},
 howpublished={online},
 year={1997},
 publisher={Muzeum i Instytut Zoologii PAN},
 language={eng},
 language={pol},
 type={Text},
 title={Advantages of early versus late nesting in black-billed magpies Pica pica hudsonia : variation in productivity, sex ratio, and fledgling size},
 keywords={Black-billed Magpie, Magpie, breeding biology, United States, Idaho (state), congresses, phenology, breeding success, sex ratio, birds, Pica pica hudsonia, Corvidae, Aves},
}