'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#14


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

Please let me know if you find any mistakes of judging species by leaving a message on the Gull individual page.

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Vega Gull#35

  • Seguro-kamome : Japanese name
  • Larus vegae vegae : Scientific name
  • Imperial Palace moat Hibiya : Field
  • 2018/03/13 : Date
  • right wing : Sample wing
  • 70% : Confidence of ID


I was able to find this bird because the gray color of this bird’s upper-parts is obviously paler than vegae. Except mirror of p10, the primaries pattern of this bird is a standard pattern of vegae. That mirror of p10 is characteristic. That mirror lacks a slightly white part on outer-web and there is a black-marking. It seems to be a considerably rare pattern in vegae that the black marking exists only in the outer-web.
Vega Gull primary wing-tip pattern Vega Gull Vega Gull

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Vega Gull#34

  • Seguro-kamome : Japanese name
  • Larus vegae vegae : Scientific name
  • Imperial Palace moat Hibiya : Field
  • 2018/03/03 : Date
  • right wing : Sample wing
  • 100% : Confidence of ID


Such white Vega are not unusual if it is already this time. It seems that the wing-projection of this bird is less for vegae.
Vega Gull primary wing-tip pattern Vega Gull Vega Gull

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