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Résumé :
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To get information about population dynamics, biology, moult and movements on Herring Gulls (Larus argentatus) and Lesser Black-backed Gulls (Larus fuscus) a colour-ringing program has started at Moerdijk Industrial zone. Because the project started recently there is only little information of breeding, wintering and migration of adult birds. From 2003, more than 1800 birds have been colour marked providing information about foraging and movements of the birds. In the future, this programme will provide information about survival and the return of young breeding birds.
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