Variation in egg size of urban Kestrels (study in Warsaw, Poland). - L. Rejt, M. Raczynska. - Berkut. 12 (1-2). 2003. - P. 70-75.
During study on Kestrels’ breeding biology conducted in Warsaw, Poland, 60 eggs were measured. The mean egg weight was 20.5 g ± 1.88, length was 39.5 mm ± 2.2, and breadth was 31.9 mm ± 1.4. Laying date was found to be a significant indicator for differences in egg characteristics. Eggs from clutches found in the central part of the city were similar in length, breadth and mean egg volume to those from the outskirts. [English].
Key words: European Kestrel, Falco tinnunculus, Warsaw, egg volume, urban area.
Address: £. Rejt, Museum & Institute of Zoology, Polish Academy of Sciences, Wilcza 64, 02–761 Warsaw,
Poland; e-mail: