Aves, p�le ornithologique de Natagora

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Aves, 8/2 | 1971 | 41-55

Louette, M.

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Article summary

A brief description of methods used in quantitative studies of bird migration by radar is given. Until now, most studies considered important region as homogeneous relative to bird migration. Data collected at the radar-basis of Semmerzake (Eastern Flanders, Belgium) showed that within the surrounding areas (coastal region and inland region) quantitative differences do appear. It is stated, however, that supplementary observations and particularly visual ones, are necessary to trace "ornithological regions".

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