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Aves, 55/3 | 2018 | 135-148

  Results of the winter waterbird censuses in Wallonia and Brussels area (Belgium) in 2017-2018
Jean-Paul Jacob, Marie-Charlotte Alvarez et les responsables régionaux des dénombrements

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Article summary

In 2017-2018, the waterbird counts took place during a winter that began very mild and wet, to be followed by a marked drop in temperature in February. For many species the numbers observed from November to January were low; even among the lowest seen in the last decade (for example the Whooper Swan Cygnus Cygnus, Eurasian Wigeon Anas penelope, Eurasian Teal Anas crecca, Mallard Anas platyrhynchos, Little Grebe Tachybaptus ruficollis, Common Moorhen Gallinula chloropus, Common Coot Fulica atra and Common Gull Larus canus). In February there were marked disappearances or reductions in numbers (of, for example, rarer herons and Lapwing Vanellus vanellus) but there were little or no increases in the numbers of species overwintering from more northerly regions (as, for example, the Common Gull). Among the few rare species of visiting birds, perhaps the most notable was the exceptional stay of a Pygmy Cormorant Microcarbo pygmaeus in Auderghem (Brussels).


  • Jean-Paul Jacob & Marie-Charlotte Alvarez
    Aves, Pôle ornithologique de Natagora
    Traverse des Muses 1 – 5000 Namur