Peter Knaus, Nicolas Strebel
Bestand und Biomasse von Brutvögeln und Nutzgeflügel in der Schweiz.
(von 1994 bis 2006 vergeben)
Bestand, Population, Biomasse, Brutvögel, Lebensraumgilden, Nutzgeflügel, Hühner
Columba palumbus, Corvus corone, Turdus merula, Turdus philomelos, Pica pica
Ringeltaube, Rabenkrähe, Amsel, Singdrossel, Elster
Population and biomass of breeding birds and farm poultry in Switzerland. In Switzerland, the annual breeding bird population was estimated to just over ten million bird pairs (20 million individuals) in 2013–2016. Based on species-specific breeding population estimates, the biomass of wild breeding birds just prior to the breeding season was estimated at roughly 1100 tons in 2013–2016. Between 1993–1996 and 2013–2016, the total breeding bird population has increased by around 10 %, and the wild bird biomass increased by roughly 20 %. This marked difference is because several larger species showed population increases above average, among them Common Woodpigeon, Carrion Crow, Eurasian Blackbird, Song Thrush and Eurasian Magpie. The farm poultry population was around 12.5 million individuals in 2013–2016. Since 1996–1999, it has increased by six million birds or almost 90 %. The live weight of the farm poultry kept in Switzerland in 2013–2016 is around 16 000 tons, or 15 times larger than that of breeding birds. Thus, the share of wild birds in the total bird biomass in Switzerland is significantly lower than globally, where this ratio lies at around 2.5. Currently, breeding birds account for slightly more than 6 % of the total bird biomass in Switzerland. Twenty years ago, the figure was just under 8 %. The biomass of farm poultry has increased by almost 40 %, which is considerably more than that of breeding birds.
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