Monthly counts of raptors on Schouwen-Duiveland (29.198 ha) in the southwestern Netherlands were carried out from September through March. Numbers fluctuated in response of the severity of the winter (severe winter of 1996/97 resulted in larger than average numbers of Hen Harrier, Sparrowhawk and Merlin, and smaller than average numbers of wintering Marsh Harriers) and food availability (1996/97 poor vole season, 1997/98 slightly better). The number of wintering Peregrines has been more or less stable during the last five years.