Movements of Mute Swan Cygnus olor (Gmelin, 1789) (Anseriformes) Based on Hungarian Ringing Data

作者：Kovacs Gyula; Szinai Peter; Karcza Zsolt; Winkler Daniel^*

来源：Acta Zoologica Bulgarica, 2018, 70(1): 75-81.

• colour marking
• distance of movements
• moulting ground
• ring recoveries
• winter migration

Movements of the mute swan Cygnus olor were studied based on the database of the Hungarian Bird Ringing Centre (BirdLife Hungary). A total of 20,335 recoveries of 6,806 individuals were evaluated, which yielded new information about migration routes, moulting and wintering grounds of this species. Apart from local recoveries, a total of 1,265 birds (21.3%) have been reported from abroad out of the total 5,940 swans originally ringed in Hungary. The recovery sites were mainly situated in the Balkan region as well as north-west and north-east from Germany (e.g. Germany, Poland, the Baltic region). The Hungarian breeding population was mostly sedentary, but short-distance winter migration also occurred to the Balkan region. The wintering mute swan population was in the range of 1,000-1,200 individuals consisting of native birds, but also including immigrants with the highest numbers coming from south Poland. Recoveries from longer distances (e.g. Denmark, Russia) were typical in severe winters. The number of moulting mute swans in Hungary was estimated to be 800 individuals, which were mostly local birds; however, considerable numbers of individuals were also arriving from the Croatian and south Polish populations.

• 出版日期2018-3