Zilk 05-11-24. Fallow deer in the Amsterdam Water Supply Dunes. During the rut the bucks frequently call out. This is called 'Grunting' in fallow deer and can be easily heard from a great distance. They are common in the area between Zandvoort and Noordwijk.ANP/Hollandse-Hoogte/Nico Garstman netherlands out - belgium out