Consultez les articles du Bulletin Aves !
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
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
Articles published in the same bulletin
Practical measures for the preservation of the Common Swift Apus apus in Wallonia and Brussels
Current status of the Western Hazel Grouse Tetrastes bonasia rhenana in Belgium: a ghost
species or a gem still to be saved?
Jean-Yves Paquet & Philippe Ryelandt
An original nesting of the Peregrine Falcon Falco peregrinus in Brussels