Calbrade, Neil
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Wildfowl 66 - Standard Papers
Population size and breeding success of the Icelandic Whooper Swan Cygnus cygnus: results of the 2015 international census
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Wildfowl 71 - Standard Papers
The Icelandic Whooper Swan Cygnus cygnus population: current status and long-term (1986–2020) trends in its numbers and distribution
Abstract PDF