Aves, p�le ornithologique de Natagora

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Aves, 18/3-4 | 1981 | 119-122

  Temporal distribution of Grey Heron (Ardea cinerea) observations in mid-Belgium and the Ardennes.
Lemy, C. & Guerriat, H.

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Article summary

Seventeen thousand, one hundred and fifteen observations carried out during the years 1966 to 1973, 1975 and 1977, arranged in decades, revealed migration peaks occuring principally from September to mid-November and from mid-January to mid-May. A fairly large number of sedentaries and winter migrators was present from the end of November to mid-January. From mid-May to mid-June, the observations probably cover immatures and erratic adults, the increase from mid-June to the end of August corresponding to the dispersion of youngs.

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