Larus hyperboreus
 
     
 
 
  ringed in NORWAY (Svalbard)
Lowestoft, Suffolk, United Kingdom 21/12/ 2008
 
     
 
 
  ringed in NORWAY (Svalbard)
Longyearbyen, Svalbard, Norway 28/05/2011
 
     
 
 
  ringed in POLAND    
     
 
 
  ringed in POLAND          
     
   
  ringing in POLAND          
     
   
 
  ringing in POLAND    
ringing in POLAND
 
 
 
     
  all the projects on cr-birding: http://home.scarlet.be/~pin02658/cr-GlaucousGull.htm  
     
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