In order to quantify the importance of the Danish Wadden Sea for water
fowl, aerial surveys were carried out in the area in the period from 1
980 to 1991. Monthly counts were used in order to improve the picture
of total numbers and distribution of waterfowl in the area. Examples a
re presented concerning numbers in relation to season, and distributio
ns in relation to tidal cycle and season for species of waders and wil
dfowl that regularly occur in the area.