Esselink, Hans
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1991: Wildfowl Special Issue No. 1 - SECTION TWO: POPULATION STUDIES
Between year variation and causes of mortality in the non-breeding population of the Mute Swan Cygnus olor in the Netherlands, with special reference to hunting
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1991: Wildfowl Special Issue No. 1 - SECTION FOUR: MIGRATION
Scandinavian/Baltic Mute Swans Cygnus olor in the Netherlands: movements under the influence of severe winter weather and their consequences
Abstract PDF