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Aves, 48/4 | 2011 | 223-234

  Results of the winter waterbirds censuses in Wallonia and Brussels area (Belgium) in 2010-2011
Pierre Loly, Marie-Charlotte Alvarez & Jean-Paul Jacob

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Article summary

The winter was cold with snow cover from the end of November till the end of December. Conditions then returned to normal, with open water surfaces thawed out by mid-January. During December, these peculiar conditions resulted in substantial decreases in numbers notably of dabbling ducks. Globally, the numbers of Anatidae and other waterbirds were near-average. There were large numbers of overwintering Common Pochards Aythya ferina and Tufted Ducks Aythya fuligula, Common Egrets Ardea alba and Eurasian Coots Fulica atra, and increased numbers of Whooper Swan Cygnus cygnus and Great Cormorant Phalacrocorax carbo. On the other hand, the numbers of various other species was average or weak (Eurasian Teal Anas crecca, Little Grebe Tachybaptus ruficollis and Great Crested Grebe Podiceps cristatus, Grey Heron Ardea cinerea, Common Moorhen Gallinula chloropus…) and no significant arrivals of northern species such as Common Goldeneye Bucephala clangula and Mergansers were recorded.


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Aigrette garzette (Egretta garzetta), Bécassine des marais (Gallinago gallinago), Bécassine sourde (Lymnocryptes minimus), Bernache de Magellan (Chloephaga picta), Bernache du Canada (Branta canadensis), Bernache nonnette (Branta leucopsis), Butor étoilé (Botaurus stellaris), Canard carolin (Aix sponsa), Canard chipeau (Anas strepera), Canard colvert (Anas platyrhynchos), Canard de Chiloé (Anas sibilatrix), Canard mandarin (Aix galericulata), Canard musqué (Cairina moschata), Canard pilet (Anas acuta), Canard siffleur (Anas penelope), Canard souchet (Anas clypeata), Chevalier cul-blanc (Tringa ochropus), Chevalier guignette (Actitis hypoleucos), Cigogne blanche (Ciconia ciconia), Courlis cendré (Numenius arquata), Cygne chanteur (Cygnus cygnus), Cygne de Bewick (Cygnus columbianus), Cygne noir (Cygnus atratus), Cygne tuberculé (Cygnus olor), Foulque macroule (Fulica atra), Fuligule à bec cerclé (Aythya collaris), Fuligule milouin (Aythya ferina), Fuligule milouinan (Aythya marila), Fuligule morillon (Aythya fuligula), Fuligule nyroca (Aythya nyroca), Gallinule poule-d'eau (Gallinula chloropus), Garrot à oeil d'or (Bucephala clangula), Goéland argenté (Larus argentatus), Goéland brun (Larus fuscus), Goéland cendré (Larus canus), Goéland leucophée (Larus michahellis), Goéland marin (Larus marinus), Goéland pontique (Larus cachinnans), Grand Cormoran (Phalacrocorax carbo), Grande Aigrette (Casmerodius albus), Grèbe à cou noir (Podiceps nigricollis), Grèbe castagneux (Tachybaptus ruficollis), Grèbe esclavon (Podiceps auritus), Grèbe huppé (Podiceps cristatus), Grèbe jougris (Podiceps grisegena), Harle bièvre (Mergus merganser), Harle piette (Mergus albellus), Héron cendré (Ardea cinerea), Macreuse noire (Melanitta nigra), Mouette mélanocéphale (Larus melanocephalus), Nette demi-deuil (Netta peposaca), Nette rousse (Netta rufina), Oie à tête barrée (Anser indicus), Oie cendrée (Anser anser), Oie cygnoïde (Anser cygnoides), Oie des moissons (Anser fabalis), Oie rieuse (Anser albifrons), Ouette d'Égypte (Alopochen aegyptiacus), Plongeon catmarin (Gavia stellata), Plongeon imbrin (Gavia immer), Pluvier doré (Pluvialis apricaria), Râle d'eau (Rallus aquaticus), Sarcelle d'hiver (Anas crecca), Tadorne casarca (Tadorna ferruginea), Tadorne de Belon (Tadorna tadorna), Vanneau huppé (Vanellus vanellus)