@misc{Gliwicz_Joanna_The_1967,
 author={Gliwicz, Joanna},
 editor={Polska Akademia Nauk. Komitet Ekologiczny},
 copyright={Creative Commons Attribution BY 3.0 PL license},
 address={Warszawa},
 howpublished={online},
 year={1967},
 language={eng},
 abstract={Observation object provided the colony of black-headed gull nesting on the area of fish ponds at Stawinoga near Narew River. On the base of observations taken each two weeks during the period from April 18 until September 1, 1964 it has been found that the location of the colony on a pond in vicinity of river does not remain without an influence upon the course of nesting, the range of penetration \{feeding), activity of birds, and time of abandoning the nest site.},
 type={Text},
 title={The dynamics of the colony of blackheaded gull (Larus ridibundus L.) on fish ponds at Stawinoga near Narew river},
 URL={http://rcin.org.pl/Content/70371/PDF/WA058_86181_P2840-T15_Eko-Pol-A-Nr-34.pdf},
 volume={15},
 number={34},
 journal={Ekologia Polska. Seria A},
 publisher={Państwowe Wydawnictwo Naukowe},
 keywords={black-headed gull, behavior, ecology, Poland, Narew River, Chroicocephalus ridibundus},
}