Kowallik, Christine
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Wildfowl 63 - Standard Papers
Does every goose count? Pitfalls of surveying breeding geese in urban areas
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2019: Wildfowl Special Issue No. 5 - Standard Papers
Long-term population trends and shifts in distribution of Bewick’s Swans Cygnus columbianus bewickii wintering in northwest Europe
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2024: Wildfowl Special Issue No. 7 - Standard Papers
International census and population trends for Bewick’s Swans Cygnus columbianus bewickii wintering from the East Mediterranean to Central Asia
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