Lesser Black-backed Gull   2CY, May 10  2017, Katwijk, the Netherlands. 
	  Graellsii-type 2CY bird. Complete moult not started yet, all replaced feathers were included in the post-juvenile moult on the wintering grounds. Advanced moult in inner wing-coverts, upper tertials and single inner scecondary. 
  
  
  
 
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