RODER FE DE (1990) Short contributions: Survey of Great Reed Warblers AcrocephaIus arundinaceus in NW Overijssel in 1989. LIMOSA 63 (4): 161-162.

A survey of the most important wetlands in the province of Overijssel in 1989 revealed 177 singing males of Great Reed Warblers during the breeding season (fig. I). This is a significant portion of the Dutch population, which may not exceed 350 pairs. Great Reed Warblers AcrocephaIus arundinaceus

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