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Brunner, A., R. F. Graf & E. Nicca

Brutbiologie und Förderung des Braunkehlchens Saxicola rubetra in einem ausgewählten Gebiet am Schamserberg (Kanton Graubünden).

2015

112

219–225

Key words
(von 1994 bis 2006 vergeben)

Bestandserfassung, Revierverteilung, Reviergrösse, Dichte, Bruterfolg, Rückgang, Intensivierung, Grünlandbewirtschaftung

Schlagwort_Vogelart
(wissenschaftlich)

Saxicola rubetra

Schlagwort_Vogelart
(deutsch)

Braunkehlchen

Schamserberg, Graubünden, Schweiz

deutsch

Abhandlung

Breeding biology and conservation of the Whinchat Saxicola rubetra in a particular area at the Schamserberg (Grisons). – With the increasing intensity of grassland management in the last decades, the Whinchat Saxicola rubetra has declined rapidly in Switzerland. A still relatively high potential exists in the regional nature park Beverin at the Schamserberg (Grisons). Our aim was to gather detailed information on the distribution, the arrangement of the territories and the breeding success of the Whinchat, in order to recommend appropriate conservation measures. The study area encompassed 195 ha parted into three sections that were each surveyed systematically nine times. We identified 23 Whinchat territories and 21 breeding pairs. For the main area (152 ha), these observations resulted in a density of 1.4 territories/10 ha and 1.3 breeding pairs/10 ha, respectively. A minimum of 12 pairs bred successfully and raised at least 24 fledglings. Together with the three pairs that obviously lost their brood, that makes 1.6 fledglings per pair and a breeding success of 80 %. Considering that we may have missed a number of fledglings, the local population at the Schamserberg is probably self-sustaining. To preserve and further the examined population, the meadows should be prevented from intensification and structural elements that are important as perches should not be removed. Instead, in some areas new elements could increase the number of breeding pairs.