Confirmed breeding in 1998-2000 was confined to shallow fens and pools in the province of Drenthe, northeast Netherlands. A few probable breeding records were noticed elsewhere. Up to 1985, only three confirmed breeding records were known. Since that year, breeding was recorded almost annually. In 1998-2000 5, 8 and 10 confirmed and probable breeding records were reported. These constitute the highest-ever numbers reported. Successful pairs in 1985-2000 produced 2.00 young/pair (n=26).
- SOVON Vogelonderzoek Nederland 2002. Atlas van de Nederlandse broedvogels 1998-2000. Nederlandse Fauna 5: 1-584. Nationaal Natuurhistorisch Museum Naturalis, KNNV Uitgeverij & European Invertebrate Survey-Nederland, Leiden.