| Lesser Black-backed Gull graellsii  1S 4CY & 12CY, May  2006 & May  2014, Moerdijk-Sassenplaat, the Netherlands. Picture: Merijn Loeve & Roland-Jan Buijs.Ringed as 4CY on May 16 2006 at Moerdijk, the Netherlands. Lesser Black-backed Gull graellsii  1S 12CY, May 13 2014, Sassenplaat, the Netherlands. Picture: Merijn Loeve.Female, probably with partner. 
 
 Lesser Black-backed Gull graellsii  1S 4CY, May 16 2006, Moerdijk, the Netherlands. Picture: Roland-Jan Buijs.Ringed and measured as male in 2006. 
 
 
 
 
 |