Numbers and distribution of Long-tailed Ducks wintering in northern Europe
01 October 1970
Main paper
During the last 25 or 30 years the Long-tailed Duck Clangula hyemalis has decreased considerably as a breeding species in Scandinavia and is stated to have done so also as a winter-visitor in the southern Baltic (Curry-Lindahl 1957, 1958, 1959, i960). In ...
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