Thousands of Oystercatchers arrive on the Wash in autumn. Where do they come from? Do they move on, or are the winter hordes the same birds? 

In a comprehensive analysis of movements of Oystercatchers Haematopus ostralegus in Britain and Ireland, Dare (1970) pointed out the lack of information from eastern England. This situation has now been changed by the ringing of about 12,000 Oysterca


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