SOVON (1985) Cooperating Organizations Bird Research Netherlands. Choice of inventory method. LIMOSA 58 (4): 167-167.

The choice of method is closely related to the objectives of the BMP. The main theorem bye The BMP is capturing changes in number of breeding birds in the form of indices or absolute numbers for at least 30 to 40 species eenvoldoende betrouwbaarheidsnive ~ u. a breakdown geographic areas and landscape would should be possible. Besides these hoofddoelstellmg Several secondary objectives, such as research into relations between the development of the breeding status and environmental factors such as usage, management, pollution, recreation and weather. The establishment of breeding numbers per landscape type, region or across the country and study of bird communities to secondary objectives are considered

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