A Plan for simultaneous International Observation of Migration round the North Sea

Published on 01 May 1930 in Editorials

IN Der Vogelzug (January, 1930), a new periodical dealing with migration observations and ringing records at Heligoland and Rossitten, Dr. R. Drost, the director of the Heligoland Station, publishes an appeal for co-operative Observation of migration on all the coasts of the North Sea. The general idea of the scheme is to appöint special days (perhaps Sundays) between September I5th and October i5th, 1930, upon which certain observations (fixed by a Standard schedule to ensure uniformity) shall be made at as many favourable points round the North Sea as possible. The observations would consist of a census of all transient and resting species and individual birds on one day at fixed hours ; determination of the exact direction (with compass) in, if possible, every case in which one or several birds of like or different species arrive, pass through or depart, with simultaneous recording of time of day in each case ; deter mination of the height of night; data concerning meteorological conditions (especially direction and strength of wind and visibility). Further data about changes of direction and steering towards islands or points of land, When possible, observations should also be made if and how nocturnal migration occurs. This is especially important since ” night-traveÃ-ing birds often behave differently from day-travelling ones. It is pointed out that while there are many observations already recorded, what is still wanting and is necessary is the simultaneous Observation of bird-migration at as many places as possible in the way above suggested. Of

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