Aves, p�le ornithologique de Natagora

Consultez les articles du Bulletin Aves !

Recherche

Retour à la liste des articles

Aves, 42/4 | 2005 | 313-324

  Evolution of the breeding population of the Great Cormorant (Phalacrocorax carbo) in the western part of Wallonia (Belgium, Hainaut Province) between 1992 and 2005.
Jenard, Ph.

Article is available in pdf Download the French article in pdf (2.39 MB)

Article summary

In the context of the large increase of the European population of Great Cormorant (Phalacrocorax carbo sinensis), a breeding population colonised the western part of Wallonia (Belgium, Hainaut Province) in 1992. This population now amounts to 443 occupied nests in 2005, distributed in two colonies, Obourg and Hensies. The Obourg colony is settled in an abandoned quarry filled with water. The Hensies colony consist in two well distinct sub-colonies along a large semi-natural freshwater pond, one of the two sub-colonies being split in several nest groups, each of them with their own population dynamic. The high number of fledged youngs and the rapid increase of occupied nests observed in both colonies suggest that this population produced, from 1998 onwards, an excess of adults which has not been absorbed by the growth of the colonies or the foundation of neighbouring new colonies. Some observation about feeding grounds used by the breeding cormorant of these two colonies and inter-specific relationships are discussed.

Articles on the same species

Aigrette garzette (Egretta garzetta), Balbuzard pêcheur (Pandion haliaetus), Bihoreau gris (Nycticorax nycticorax), Busard Saint-Martin (Circus cyaneus), Buse pattue (Buteo lagopus), Buse variable (Buteo buteo), Butor étoilé (Botaurus stellaris), Canard pilet (Anas acuta), Canard souchet (Anas clypeata), Cigogne blanche (Ciconia ciconia), Cigogne noire (Ciconia nigra), Cygne chanteur (Cygnus cygnus), Cygne de Bewick (Cygnus columbianus bewickii), Cygne tuberculé (Cygnus olor), Eider à duvet (Somateria mollissima), Érismature rousse (Oxyura jamaicensis), Étourneau sansonnet (Sturnus vulgaris), Faucon crécerelle (Falco tinnunculus), Faucon émerillon (Falco columbarius), Faucon pèlerin (Falco peregrinus), Fuligule milouinan (Aythya marila), Fuligule nyroca (Aythya nyroca), Garrot à oeil d'or (Bucephala clangula), Grand Cormoran (Phalacrocorax carbo), Grèbe castagneux (Tachybaptus ruficollis), Grèbe esclavon (Podiceps auritus), Grèbe huppé (Podiceps cristatus), Harle bièvre (Mergus merganser), Harle huppé (Mergus serrator), Harle piette (Mergus albellus), Héron cendré (Ardea cinerea), Macreuse brune (Melanitta fusca), Macreuse noire (Melanitta nigra), Milan royal (Milvus milvus), Moineau domestique (Passer domesticus), Nette rousse (Netta rufina), Oie cendrée (Anser anser), Oie des moissons (Anser fabalis), Pie bavarde (Pica pica), Plongeon catmarin (Gavia stellata), Pygargue à queue blanche (Haliaeetus albicilla), Sarcelle d'hiver (Anas crecca)