Exciting gulls's primary wing-tip patterns

Variations of the primary wing-tip pattern of large gulls such as Vega Gull are various and it can be said that each individual is all different. However, this primary wing-tip pattern has a characteristic in each species and this is one of the important information to judge the species. A purpose of this site is to see the variety of variations of the primary wing-tip pattern of large gulls.

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Thayer’s Gull#13


Thayer's Gull wing-tip pattern Thayer's Gull Thayer's Gull

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Unclear Gull#3

  • Imperial Palace moat Hibiya : Field
  • 2016/03/12 : Date
  • right wing : Sample wing
  • 10% : Confidence of ID


This individual was not so small, and a little paler upperparts .
Unclear Gull wing-tip pattern Thayer's Gull Thayer's Gull

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Mongolian Gull#1

  • Larus vegae mongolicus : Scientific name
  • Imperial Palace moat Hibiya : Field
  • 2016/01/17 : Date
  • right wing : Sample wing
  • 80% : Confidence of ID


Mongolian Gull wing-tip pattern Mongolian Gull Mongolian Gull

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Mew Gull#16

  • Russian Common Gull
  • Larus canus heinei : Scientific name
  • Imperial Palace moat Hibiya : Field
  • 2017/03/03 : Date
  • left wing : Sample wing
  • 10% : Confidence of ID


Small white mirror on P9. Small white moon on P7. Greenish tinge bill with complete dark subterminal bar. I think that this bird is a heinei. But I’m not sure.
Mew Gull wing-tip pattern Mew Gull Mew Gull

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Mew Gull#15

  • Russian Common Gull
  • Imperial Palace moat Hibiya : Field
  • 2017/02/17 : Date
  • right wing : Sample wing
  • 50% : Confidence of ID


Small white mirror on P9. Small white moon on P7. Bill with complete dark subterminal bar.
I think that this bird is a heinei. But I’m not sure.
Mew Gull wing-tip pattern Mew Gull Mew Gull

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Mew Gull#13


This Mew Gull has very interesting primaries pattern.
It has long white moon and additionally small white mirror on P8.
Is this a kamtschatschensis? I’m not sure.
Mew Gull wing-tip pattern Mew Gull Mew Gull

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