TY - GEN N1 - Pages 615-651 : illustrations ; 24 cm N1 - Bibliographical references (pages 648-649) N1 - Abstract in Polish N2 - Several years' observations of birds on Vistula River in the vicinity of Wyszogród and studies on their food enabled the analysis of: daytime activity cycles of Vistula birds, value of particular Vistula habitats for waterfowl, interrelations between different species, food relations of birds. These studies permitted also to demonstrate the morphoecological types of these birds. L1 - http://rcin.org.pl/Content/69344/PDF/WA058_86075_P2840-T12-Eko-Pol-A-Nr-33.pdf M3 - Text J2 - Badania nad ekologicznymi przystosowaniami ptaków Wisły PY - 1964 IS - 33 EP - 651 KW - bird watching KW - birds KW - Poland KW - Vistula River KW - Aves A1 - Dobrowolski, Kazimierz A. A2 - Polska Akademia Nauk. Komitet Ekologiczny PB - Państwowe Wydawnictwa Naukowe VL - 12 CY - Warszawa SP - 615 T1 - Studies on ecological adaptations of birds of the Vistula River UR - http://rcin.org.pl/dlibra/publication/edition/69344 ER -