Comparison of bird fauna of the Volga and the Vistula rivers during autumn migration. - A. Golawski, Z. Kasprzykowski. - Berkut. 13 (1). 2004. - P. 103-109.
Counts of birds migrating within the main river stream were conducted along 104 km of the lower Volga river in the period 3–10.08.2002 and along 98 km of the middle Vistula river in on 2–4.08.2003. Along the Volga 12 209 waterbirds from 53 species were encountered. The most numerously represented ecological groups were birds hunting from flight, and considering food preferences – ichthyophags. Along the Vistula 5539 individuals from 39 species were recorded, domination of grassland birds and entomophags was stated. [English].
Key words: Volga river, Vistula river, migration, fauna, ecological groups.
Adress: A. Golawski, Department of Zoology, University of Podlasie, Prusa 12, 08-110 Siedlce, Poland;
e-mail: artgo1@ap.siedlce.pl.