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  1. JANJ

    9 Caspian Gulls? from Denmark

    As mentoned by Lou some Caspian lack a dark mark on p5 all together. Some have a thin mark as on Kent's bird, some again like this: http://www.artportalen.se/birds/gallery_imageinfo.asp?imageid=179065 The interesting part is whether a lack of a dark mark on p5 is a within variation for Caspian...
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