Studies carried out in the vicinity of Rogów in central Poland showed a 47% rise in the population density of the Common Buzzard, inasmuch as the average number of breeding pairs in the study area of 105 km2 increased from 18.2 in the years 1982–1991 to 26.7 in the years 2001–2003. Furthermore, an upward trend was observed for each separately investigated forest complex. Possible mechanisms underpinning this increase in density are discussed.
REFERENCES
N. T. J. Bailey
1959. Statistical methods in biology. English Univ. Press. London. Google Scholar
J. Goszczyński
1991. The food habits of Buzzards and Goshawks during the nesting period. In:
S. Csányi
,
J. Ernhaft
(eds).
Trans. XXth Congress Int. Union Game Biologists, Univ. Agricult. Sci., Gödöllö, Hungary. Part 1, pp: 387–390. Google Scholar
J. Goszczyński
1997. Density and productivity of Common Buzzard Buteo buteo and Goshawk Accipiter gentilis populations in Rogów, Central Poland. Acta Ornithol. 32: 149–155. Google Scholar
J. Goszczyński
2001. The breeding performance of the Common Buzzard Buteo buteo and Goshawk Accipiter gentilis in Central Poland. Acta Ornithol. 36: 105–110. Google Scholar
E. J. M. Hagemeijer
,
M. J. Blair
(eds).
1997. The EBCC Atlas of European Breeding Birds: Their Distribution and Abundance. T & AD Poyser, London. Google Scholar
A. Kostrzewa
1991. Intraspecific interference competition in three European raptor species. Ethol. Ecol. Evol. 3: 127–143. Google Scholar
I. M. W. Sim
,
L. Campbell
,
D. J. Pain
,
J. D. Wilson
2000. Correlates of the population increase of Common Buzzards Buteo buteo in the West Midlands between 1983 and 1996. Bird Study 47: 154–164. Google Scholar
D. W. Snow
,
C. M. Perrins
1998. The Birds of the Western Palearctic, Concise Edition. Vol. I. Oxford Univ. Press. Google Scholar
L. Tomiałojć
,
T. Stawarczyk
2003. [The avifauna of Poland — distribution, numbers and trends.]. PTPP “pro Natura”, Wrocław. Google Scholar
R. Zielony
(ed.).
1993. [Natural condition of experimental forest of Agricultural University of Warsaw in Rogów]. SGGW, Warszawa. Google Scholar
