Lesser Black-backed Gull TN4 adult, April 2011 & June 2013, the Netherlands. Picture Maarten van Kleinwee & Ruud Altenburg.
White TN4, ringed as pullus on July 08 1998 at Europoort, Rotterdam, The Netherlands by Norman van Swelm.
Lesser Black-backed Gull TN4 16CY, June 16 2013, Noordwijk, the Netherlands. Picture Ruud Altenburg.
below: Lesser Black-backed Gull TN4 14CY, April 08 2011, Maasvlakte, the Netherlands. Picture Maarten van Kleinwee.
In the breeding colony.
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