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Nest site and breeding habitat characteristics in urban jackdaws Corvus monedula in Rome (Italy)
Subtitle:Acta Ornithologica, vol. 37, no. 1 ; Charakterystyka miejsc i środowisk lęgowych miejskiej populacji kawek w Rzymie ; Nest sites of jackdaws in Rome
Creator: Contributor:Polska Akademia Nauk. Muzeum i Instytut Zoologii
Publisher:Muzeum i Instytut Zoologii PAN
Place of publishing: Date issued/created: Description:Bibliogr. s. 18 ; S. [15]-19 : il. ; 27 cm ; Streszcz. pol. Nazwy taksonów także w jęz. łac.
Type of object: Subject and Keywords:Kawka -- Włochy -- Rzym [KABA] ; miejsca i środowiska lęgowe ; ptaki miast ; krukowate ; ptaki ; Corvus monedula ; Coloeus monedula ; Corvidae ; Aves ; 1995-2001
Abstract:Nest sites and habitat features of the area around nests in a population of Jackdaws breeding in the centre of Rome, Italy was studied. Occupied nests (n = 41) had a predominant south-east exposition and were placed on average 20 ą 8 m above the ground. The availability of suitable holes positively influenced the size of breeding colonies. The preference of SE exposure of nest holes could be affected by the winter wind which blows from NW directions. To describe habitat conditions at 20 nesting areas of the Jackdaws in Rome, in comparision with 14 randomly selected sites from the same area 25 variables in plots within a 28.8 ha area were measured. Built-up districts covered on average 77% and 78% of total surface in occupied plots and in random plots, respectively. Ruderal areas covered 5% of total area in occupied plots and 0.4% in random ones, wooded areas - 20% and 12%. Stepwise discriminant function analysis carried out on habitat variables in nesting areas and random plots provided a model based on the proportion of ruderal areas and gardens that correctly classified 90% of cases. Jackdaws are associated with habitats characterised by interspersion of ruderal areas, gardens, and built-up districts that provide suitable nest sites. Effective protection measures in urban areas should concentrate on conservation of both suitable cavities in old buildings and relict patches of ruderal and open habitats bordering city centres.
Relation: Volume: Issue: Start page: End page: Resource type: Detailed Resource Type: Format: Source:MiIZ PAN, patrz sygn. czas. P.257-37-1 ; MiIZ PAN, patrz sygn. czas. P.4568-37-1 ; click here to follow the link
Language: Rights:Prawa zastrzeżone - dostęp ograniczony
Terms of use: Digitizing institution:Muzeum i Instytut Zoologii Polskiej Akademii Nauk
Original in:Biblioteka Muzeum i Instytutu Zoologii PAN
Projects co-financed by:Program Operacyjny Innowacyjna Gospodarka, lata 2010-2014, Priorytet 2. Infrastruktura strefy B + R ; Unia Europejska. Europejski Fundusz Rozwoju Regionalnego
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