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The authors correlated the percentage cover of forested areas with Tawny Owl Strix aluco density and territory size measured in deciduous woodlands along the elevation gradient in central Italy. They calculated the amount of wooded areas per owl territory on the basis of four forest types (urban woods, sclerophyllous woods, mesophilous woods, and montane beech woods). Breeding density differed 3-fold...
This study was carried out in Rome city from 1991 to 1999. In a total of 47 urban parks and suburban woods, 22 wooded areas were occupied by Great Spotted Woodpeckers during the breeding period. All woods greater than 50 ha in area were occupied by woodpeckers. On a five year scale, territorial stability was positively correlated with woodland size. The requirement of wooded area per territory was...
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