Dwergmeeuwen in augustus 1991: een rectificatie
Sula , Volume 5 - Issue 4 p. 158- 158
A map, published in Sula’s Recent Reports 5(3), said to show the distribution of Little Gulls in the Dutch sector of the North Sea, should be regarded as a map of Little Gull and immature ’commic’ terns together. By mistake, similar looking birds were all identified as Little Gulls, overlooking considerable numbers of immature terns.
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