| Coordinators:Albert de Jong
 Leon Kelder
 Roland-Jan Buijs
 Thijs Horst
 Merijn Loeve
 Mars Muusse
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   | Caspian Gull cachinnans  1|4 1CY, September  - December 2023, Spain &  England. Picture: Richard Watkins, Pablo Miki & Martin Casemore.Tibia  G-1|4 and metal NLA 5.623.805, ringed as  pullus Larus cachinnans on May 12 2023 at De Kreupel, Holland (5247.00 N 513.00 E). 
      Ringer  Leon Kelder. Recoveries:19-05-2023 IJsselmeer (De Kreupel), Noord-Holland, NL 5.247,00 N 513,00 E captured by ringer Leon Kelder
 01-07-2023 IJsselmeer (De Kreupel), Noord-Holland, NL 5.247,00 N 513,00 E colourring read Leon Kelder
 02-07-2023 IJsselmeer (De Kreupel), Noord-Holland, NL 5.247,00 N 513,00 E colourring read Leon Kelder
 15-09-2023 Dungeness (Arc Pit), Kent, ENGELAND 5.055,00 N 56,00 E colourring read Martin Casemore & Richard Watkins
 04-12-2023 Castropol (Strand), Asturias, SPANJE 4.931,00 N 700,00 W colourring read Pablo Miki
 below: Caspian Gull cachinnans  1|4 1CY, December 04 2023, Castropol - Asturias, Spain. Picture: Pablo Miki.
 below: Caspian Gull cachinnans  1|4 1CY, September 15 2023, Dungeness, England. Picture: Martin Casemore.
 below: Caspian Gull cachinnans  1|4 1CY, September 15 2023, Dungeness, England. Picture: Richard Watkins.
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