Great Black-backed Gull (Larus marinus)

(last update: July 12, 2015)
Coordinators:
Jean-Michel Sauvage (France)
Morten Helberg (Norway)
Nils Helge Lorentzen (Norway)
Mars Muusse (Netherlands)

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Great Black-backed Gull (Larus marinus) BJ 1CY, November 16 2016, Katwijk, the Netherlands.

Ringed as pullus in 2016, in the Netherlands. Green tibia BJ and metal ring Arnhem 7.109.015.
Ringed as pullus on June 26 2016 at Waddenzee (Vogeleiland Griend), Friesland, the Netherlands (5315.00 N 515.00 E). Ringer: Date Lutterop.

Recoveries:
5-9-2016 IJmuiden (Forteiland), Noord-Holland, NL 5.228,00 N 434,00 E colourring read José Verbeek
19-9-2016 Zandmotor (Strand), Zuid-Holland, NL 5.203,00 N 411,00 E colourring read N.Huig & R. van Oosteroom
16-11-2016 Katwijk aan Zee (Strand), Zuid-Holland, NL 5.213,00 N 424,00 E colourring read Mars Muusse

US: 100%, LS: 25-50%, TOTSCAPS: 75-99%. Tertials and coverts juvenile.