(1987) News: Old data waterfowl Oude Maas sought. LIMOSA 60 (2): 87-87.

Vogelwerkgroep the Oude Maas, the last three winter counts of waterbirds on the Oude Maas 87 held. We compare the results with counts from previous years. Our main interest is based on counts for 1970. In that year Haringvliet concluded that the tidal range in the Oude Maas was halved.

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