@misc{Ekins_Graham_The_1997,
 author={Ekins, Graham},
 editor={Polska Akademia Nauk. Instytut Ekologii},
 copyright={Creative Commons Attribution BY 3.0 PL license},
 address={Dziekanów Leśny},
 howpublished={online},
 year={1997},
 language={eng},
 abstract={Colour-ring codes of cormorants using the Abberton and Hanningfield Reservoir roosts were recorded between October 1992 and July 1993. In addition temporary hides were used to read metal ring numbers of cormorants using the former site. Birds from both British carbo and continental sinensis populations wintered and bred. The implications of the different recording techniques and the provenance of the Abberton breeding colony are discussed.},
 title={The origin of ringed cormorants Phalacrocorax carbo at Abberton Reservoir, Essex, England},
 type={Text},
 URL={http://www.rcin.org.pl/Content/87957/PDF/WA058_90408_P2840-T45_Eko-Pol-A-Nr-1.pdf},
 volume={45},
 number={1},
 journal={Ekologia Polska},
 publisher={Oficyna Wydawnicza Instytutu Ekologii PAN},
 keywords={cormorants, roosting place, origin, subspecies, south-eastern England},
}