Lesser Black-backed Gull 2CY, May 29 2017, Heemskerk, the Netherlands.
      Bird is not ringed, no provenance on origin. Intermedius-type 2CY bird. 
       Post-juvenile moult include many inner wing-coverts and tertials. Also most rectrices replaced. 
        Complete moult  started: P1-P2 missing. 
        
        
        
        
      
      
      
      
     
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