Van Dijk A.J., Boele A., Hustings F., Koffijberg K. & Plate C.L. (2010): Broedvogels in Nederland in 2008. SOVON-monitoringrapport 2010/01. SOVON Vogelonderzoek Nederland, Beek-Ubbergen.
SOVON Vogelonderzoek Nederland 2009. State-of-the-birds-in-the-Netherlands in 2009 (in Dutch, Vogelbalans 2009).
This monitoring scheme is covering practically all of the Dutch breeding birds. It is mainly based on volunteer data which are coordinated by professional staff. Some of the questions need to be answered species specific, e.g. range covered by monitoring