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Breeding Kestrels Falco tinnunculus were studied in Rome with the aim to test the Gehlbach's model. Density was very high in the city-centre (1.9 pairs/km²) and relatively high in the suburbs (0.6 pairs/km²). Nest spacing was low in the city-entre, and close-nesting pairs were recorded. Breeding success was consistent with that of other European urban areas. Availability of nest-sites, especially...
Density and productivity of Common Buzzard and Goshawks populations were studied over a period of 11 breeding seasons in Central Poland. The mean densities of Buzzards and Goshawks were 1.73 and 1.63 pairs/10 km² of the whole area (105km²), respectively. Both studied species showed little variation of density during the study period. Breeding pairs constituted over 90% of all pairs recorded in the...
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