Larus delawarensis
 
     
 
 
  ringed in DENMARK  
Naerum, Denmark, 04/03/2006
 
 
 
 
 
  ringed in POLAND  
Olsztyn, warminsko-mazurskie, Poland 08/12/2007
 
     
 
 
  ringed in POLAND
Olsztyn, Poland 12/2007
 
     
     
  all the projects on cr-birding: http://home.scarlet.be/~pin02658/cr-RingbilledGull.htm  
     
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