| Coordinator: Albert de Jong
 Merijn Loeve
 Roland-Jan Buijs
 Thijs Horst
 Leon Kelder
 Mars Muusse
 Home Project InfoLocation Lelystad
 Location De Kreupel
 2019 Lelystad
 2020 Lelystad
 2021 Lelystad
 Coded nests  Lelystad
 2020 De Kreupel
 2021 De Kreupel
 Coded nests  De Kreupel
 All ring codes 2020
 All ring codes 2021
 Lelystad 2020:nest 001
 nest 002 yPNED
 nest 003
 nest 005 yPLDP
 nest 006 yPESV
 nest 008 gXLDT
 nest 009
 nest 011
 nest 012
 nest 013
 nest 014
 nest 015
 nest 016
 nest 017
 nest 018
 nest 021
 nest 025
 nest 027
 nest 028
 nest 029
 nest 031
 nest 032
 nest 033
 nest 034
 nest 035
 nest 036
 nest 037
 nest 038
 nest 039
 pair A
 pair B
 Lelystad 2021nest  y-PNED
 nest  y-PLDP
 nest  y-PHSV
 nest  y-P:A02
 nest  y-P:U60
 nest zy-MT
 nest  r-FB
 nest  r-FC
 nest 001
 nest 003
 nest  006
 nest 011
 nest 012
 nest 013
 nest 014
 nest 015
 nest 016B
 nest 017
 nest 018
 nest  019
 nest 021
 nest 034
 nest 035
 nest 038
 nest 040
 nest 041
 nest 042
 nest 044
 nest 045
 nest 046
 nest 047
 nest 048
 nest 053
 nest 055
 nest 056
 nest 058
 nest 060
 nest 062
 nest 063
 nest 065
 nest 066
 nest 067
 nest 072
 | Caspian Gull cachinnans X229 5CY-6CY, April  2023 & March 2024, Lelystad & De Kreupel, the Netherlands.  Picture: Thijs Horst & Mars Muusse.Black ring X229, ringed as pullus on May 28 2019 at a small rooftop colony in Greifswald, Germany. In 2023:Present in colony De Kreupel, but on soos-island. Most likely without nest this year; prospecting year.
 
 below: Caspian Gull cachinnans X229 6CY,  July 30 2024, colony De Kreupel, the Netherlands. Picture: Thijs Horst.
 below: Caspian Gull cachinnans X229 6CY,  March 04 2024, colony De Kreupel, the Netherlands. Picture: Thijs Horst & Mars Muusse.
 
 below: Caspian Gull cachinnans X229 6CY,  January 18 2024, Almere - De Vaart, the Netherlands. Picture: Thijs Horst & Mars Muusse.
 
 
 below: Caspian Gull cachinnans X229 5CY, April 09 2023, Lelystad, the Netherlands.  Picture: Thijs Horst & Mars Muusse.
 
 
 below: Caspian Gull cachinnans X229 5CY,  March 07 2023, Almere - De Vaart, the Netherlands. Picture: Thijs Horst.
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