SOVON (1986) Cooperating Organizations Bird Research Netherlands. Comparison of results of BSP and BMP. LIMOSA 59 (1): 47-47.

With the BSP is usually a large area small number of species counted, whereas in BMP a small area aile breeding birds are counted. the is obvious that these differences, among other regarding the method, the results of will become clear. BSP staff will probably feel that many species or pairs are missed, but whether this is the case , it remains to be seen. BSP data from a 30 ha large area (forest) were compared with BMP-Yen data. For the BSP, four visits and BMP to eleven. The comparison (Table 4) is revealed that the BSP still a good idea was obtained from the number of pairs of scarce species.

[free pdf] [dutch summary]