advanced 2nd cycle with large p10 mirror and two white rectrices (1)

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Picture ID: 1364
Upload: 01.06.2012
Photo date: 30 April 2012
Location: sfantu gheorghe, danube delta
Photographer © lou bertalan
Gallery: cachinnans 3cy january-june
Species: larus cachinnans

"advanced" 2nd cycle in flight showing a large p10 mirror: long and extended/rectangular on inner web, small on outer web. at this age class p10 mirror usually is oval and restricted to inner web.
some advanced 2nd cycle cachs here:
same bird also shown in pics 1365 and

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