The natural occurrence of North American birds in Europe is a wellestablished fact substantiated by recoveries of ringed birds. The transatlantic crossings of waders and passerines have been excellently treated by Nisbet (1959, 1963) and, more recently, by Sharrock (1971). The waterfowl (Anatidae) have received less attention, however, and no attempt has previously been made to summarise their occ...

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