IJmuiden Gull Research Team season 2020 review

Our review of the 2020 season describing the results of our research into Lesser Black-backed Gulls, Herring Gulls, Common Gulls, and Oystercatchers at IJmuiden Forteiland in the Netherlands is now available. It includes: The total numbers of nests and their content found, total breeding pairs, number of colour rings fitted. An overview of our hybrid gulls (presumed Lesser Black-backed …

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