Ecological distribution and population densities of raptors in the inner and outer zone of a Central European city

Ukrainian Journal of Ecology

G. Kopij¹ 

关键词: population density;    urban ornithology;    Wrocław;    Falco tinnunculus;    Buteo buteo;    Accipiter gentilis;    Accipiter nisus;    Circus aeruginosus;   

DOI  :  10.15421/2018_279

学科分类：生物科学（综合）

来源: Alex Matsyura Publishing

【 摘 要 】

Five raptor species were recorded as breeding in the city of Wrocław (293 km 2 ) during the years 2002-2010:Falco tinnunculus(2.4 pairs per 10 km 2 ),Buteo buteo(4.1 pairs/10 km 2of wooded area),Accipiter gentilis(3.1 pairs/10 km 2of wooded area),Accipiter nisus(1.6 pairs/10 km 2of wooded area),Circus aeruginosus(0.2 pairs per 10 km 2 ). All these species have increased in numbers over the last 20-30 years, both in the inner and outer zone of the city.Falco tinnunculusis a well-established raptor in the inner part of the city, whileAccipiter nisus, A. gentilis, Buteo buteostarted to infiltrate to the inner zone. In the last 70 years, a few cases of nesting were recorded for four other raptor species in Wrocław:Milvus migrans, Milvus milvus, Pernis apivorusandFalco subbuteo,but none of them was recorded in the inner zone of the city.  Abundant and stable food supply (small mammals, columbids, corvids and small passerine birds), and freely available nesting and perching sites may contribute to this success.

【 授权许可】

CC BY