results of the periods of severe frost in the winters of 1954-55 and 1955-56 were the unprecedented numbers of Bewick's Swans (Cygnus columbianus bewickii) which occurred in Great Britain. The influx in early 1956 was particularly spectacular, and the birds were seen in greater or lesser numbers at over 200 different places in England alone, the total numbers certainly running into thousands. This ...

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