Summer recoveries of wigeon, pintail, shoveler and tufted duck ringed in Britain

Abstract

It has been generally accepted that only a small proportion of the ducks found in Britain in winter breed in this country and that most of the visitors come from Scandinavia, the Baltic countries and farther east. Recoveries of ringed ducks are of no great importance in establishing the limits of the breeding range and the passage routes of a species, which can be done more effectively by direct observation, but they do show how the British-wintering populations are distributed within the specific range.