Cold weather movements of nine common species of wildfowl (Shelduck, Wigeon, Teal, Mallard, Pintail, Shoveler, Pochard, Tufted Duck and Coot) were investigated in Western Europe using ringing recovery data and International Waterfowl Census count information.
Recovering data from birds ringed between 1950 and 1986 and count information from the period 1967-1986 were analysed. During this period, six hard winters were recognized.
IWRB Special Publication No. 13 Language(s): English , Author(s): S.C. Ridgill and A.D. Fox
A review copy is available at Wetland International Headquarter.