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Thread: Dunge gull

  1. #1
    Senior Member Alex Lees's Avatar
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    Jan 2008

    Default Dunge gull

    not seen any discussion of this look-alike glaucescens, primary pattern more suggestive of Viking Gull (argentatus x hyperboreus) ?
    Dept. of Zoology, University of Cambridge, UK

    My website - Neotropical Bird Club -Tropical Forest Research - Punkbirder - Wikiaves

    In natural science the principles of truth ought to be confirmed by observation. — Carolus Linnaeus

  2. #2
    Senior Member Johnny X's Avatar
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    Dec 2007
    Over there


    408 views and no responses .

    To me this is a Herring Gull albeit a leucistic individual. I can't see anything that really points to any other species.

    I'd be interested to read what suggests otherwise?

  3. #3
    Senior Member JanJ's Avatar
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    Jan 2008


    One of the 408 viewers is me. As Johnny I see Herring (third/fourth winter type, but considering the large mirror on p9 (see below), probably older than third winter).
    It´s not an easy task to get a grip of the pattern on those outer primaries - seen best imo in image 4. Anyway - a pale individual (leucistic?), There are dark markings on p10(tiny subterminal mark on p10), to p6. The pattern on p9 is interesting - somehow 'Thayeri-patterned' (dark covering outer web making mirror look large), judged from image 3 & 4, different impression on the far wing in image 2 though.


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