(1987) News: Rooks Rook Corvus frugilegus in the Netherlands. LIMOSA 60 (1): 44-44.

The oldest census Rooks Rook Corvus frugilegus in the Netherlands dates from 1924, when the number of nests was estimated at 30000. in 1944 this number was between 40000 and 50000. since then The state declined sharply to a low of c. 10000 in the years 1970 to 1975 was achieved. since then The state has managed to recover to 20 000 nests in 1980 and 28,000 nests in 1985. especially in Ontario, this trend. Pronounced. In Drenthe, Overijssel and North Brabant, the recovery is also evident. In South Limburg, the population increased whey, but that is not accompanied by increase the number of colonies. The report of the Inventory Rook in the Netherlands in the years 1970, 1975, 1980 and 1985 can be obtained from the Ministerie van Landbouw en Visserij, Directie Natuur, Milieu en Faunabeheer, Postbus 20401,2500 EK 's-Gravenhage.

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