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Black-tailed Gull, Larus crassirostris


Age/Type Date Location Comments
1st CY October 2004 South Korea  
1st CY October 2010 Choshi, Japan  
1st CY October 2010 Choshi, Japan  
1st CY October 2010 Choshi, Japan  
2nd CY October 2010 Choshi, Japan  
Adults October 2010 Choshi, Japan In flight
Adult October 2010 Choshi, Japan Three birds
Adult October 2004 South Korea  
Adult October 2004 South Korea  
Adults October 2004 South Korea  Two birds.

CY = Calendar Year