@misc{Kirby_Jeff_S._Recent_1997,
 author={Kirby, Jeff S. and Sellers, Robin M.},
 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={British cormorants breed mainly on the coast, but the number breeding inland is increasing sharply. Overall, the population is increasing by about 3% per annum, with marked regional variations. In the mid-1980s the breeding population was estimated to be 6400-7200 pairs. The wintering population has been increasing more rapidly at 10-25% per annum. In 1987-1991, the winter population averaged on estimated 16 800 birds.},
 type={Text},
 title={Recent trends in the numbers and distribution of cormorants Phalacrocorax carbo in Britain},
 URL={http://rcin.org.pl/miiz/Content/87954/PDF/WA058_90386_P2840-T45_Eko-Pol-A-Nr-1.pdf},
 volume={45},
 number={1},
 journal={Ekologia Polska},
 publisher={Oficyna Wydawnicza Instytutu Ekologii PAN},
 keywords={cormorants, breeding population, distribution, wintering population, number trends, Great Britain},
}