La Tour du Valat

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[Was everything better in the past? A review of changes in distributional area and population size of Swiss breeding birds 1950–2020]

Martin Weggler, Auteur

Dans Ornithologische Beobachter (Der) (120(1) March, 2023)

Based on data from four atlas projects and the Swiss Bird Index®, the changes in the distribution and population of breeding birds in Switzerland are summarised for all breeding bird species. For the three and seven decades (1990-2020 and 1950-2[...]

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