TINBERGEN L (1941) On the role of the Dutch dune line at the orientation of migratory finches and starlings. LIMOSA 14 (1): 1-20.

Publication of the 16th Stichting Vogeltrekstation Texel Common Starling Sturnus vulgaris Common Chaffinch Fringilla coelebs Brambling Fringilla montifringilla Along the Dutch dune line is highly concentrated in the autumn migrations of various zangvogelsoortert. D 0 and b m M a kkin k (1) names, these migrations consists of animals that actually the sea to draw, but for fear of the coastal environment remain follow. This hypothesis was written in response to observations from the Wadden Sea, where in many places has seen, tractors a broad front in meeting the coast by sea dare fly, waver and finally following the coastline in that direction, which is the closest to their original direction. Along a shoreline can they often have a narrow migrations, which scales the strength of many (number of birds per unit time per unit of thaw section) of the migrations across the wide front has. From this assumption of D 0 and b m M k ak chin is very much for the hand, because behind the dunes is controlled WSW and pull Wgerichte of different singing bird observed beach and sees aan'het they are rarely or never to sea. We are here especially for finches, Fringilla coelebs and starlings, Sturnus vulgaris. Yet one sees on the Dutch coast the dune trekconcentritie never so convincingly arise in the Wadden Sea. In particular, the wavering heave and seldom seen. Nor does the order of magnitude the phenomenon is more significant than many coastal dune Wadkusten: the number of birds is greater, the migrations seems wider, driving the coast extends over longer distances without interruption. The latter implies that a portion of the tractors already more than a whole Voigt day trip to the Dutch coast. One wonders whether such animals are always respond to their preference for a seaward direction endus

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