| Coordinators:Albert de Jong
 Leon Kelder
 Roland-Jan Buijs
 Thijs Horst
 Merijn Loeve
 Mars Muusse
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 | Caspian Gull cachinnans  7|H 1CY & 3CY, May   2023 - February 2025,  the Netherlands & Spain.  Picture: Thijs Horst & Mars Muusse.
      Tibia ring G-7|H and metal NLA 5.556.500, ringed as pullus Larus cachinnans on May 18 2023 in nest 003 at Lelystad, the Netherlands. Ringed by Roland-Jan Buijs ringing team.       Recoveries:18-5-2023 Lelystad (Bataviahaven), Flevoland, NL 5.230,00 N 525,00 E colourring read Thijs Horst
 18-6-2023 Lelystad (Bataviahaven), Flevoland, NL 5.230,00 N 525,00 E colourring read Thijs Horst
 26-6-2023 Lelystad (Bataviahaven), Flevoland, NL 5.230,00 N 525,00 E colourring read Thijs Horst
 08-07-2023 Lelystad (Bataviahaven), Flevoland, NL 5.230,00 N 525,00 E colourring read Thijs Horst
 19-02-2025 Getaria (Strand), Guipúzcoa, SPANJE 4.318,00 N 211,00 W colourring read Oliver Perez Amas
 Data and visits for nest 003-2023: 
        
        
        
        
          | egg sizes & volume 2023 |  |  |  |  |  |  |  |  |  |  |  
          | SPECIES | NEST | A_length | A_width | A_volume | B_length | B_width | B_volume | C_length | C_width | C_volume | TOTAL NEST: | known parents? |  
          | cach x cach | 3-2023 | 77 | 50,5 | 98,87 | 75,6 | 50,5 | 97,07 | 74,5 | 49,5 | 91,91 | 287,86 | same as 2022 |  
          |  |  |  |  |  |  |  |  |  |  |  |  |  |  
          | ring pulli: |  | laying A egg: | hatch A egg |  |  |  |  |  |  |  |  
          | 10-mei |  | 7-apr |  | 5-mei |  |  |  |  |  |  |  |  |  
          |  |  |  |  |  |  |  |  |  |  |  |  |  |  
          | catch: | date: | metal: | darvic: | mass: | wing: | head+bill: |  |  |  |  |  |  
          | Pullus | 18-05-2023 | 5556499 | G-7|G | 95 | -- | 55 |  |  |  |  |  |  |  
          |  |  | 5556500 | G-7|H | 133 | -- | 63 |  |  |  |  |  |  |  
          |  | 18-06-2023 |  | G-7|H |  |  |  |  |  |  |  |  |  |  
          |  | 25-06-2023 |  | G-7|H |  |  |  |  |  |  |  |  |  |  
        
        
        
          |  |  |  |  |  |  
          | nest 003-2023 |  |  |  |  |  
          | dam: | dam 1 east |  |  |  |  |  
          | location: | In bend, visible from S    side. Is nest 3-2020/22. |  |  
          | breeders: | cach x cach |  |  |  |  |  
          | OBSERVATIONS: |  |  |  |  |  |  
          | 04-04-2023 | adult: | still no birds present. |  |  |  
          | 09-04-2023 | adult: | still no birds present. |  |  |  
          | 26-04-2023 | adult: | adult breeding |  |  |  |  
          |  | nest: | exact location of 2022. |  |  |  
          |  | eggs: | 3x egg, measured. | A: 1 mm - float |  
          |  |  |  |  | B: 90 - tip bottom |  
          |  |  |  |  | C: 90 - tip bottom |  
          | 11-05-2023 | eggs: | still 3 eggs |  |  |  |  
          | 18-05-2023 | pulli: | 2 chicks ringed, 3rd not    found |  |  |  
          | 16-06-2023 | pulli: | 3x fledged chicks |  |  |  |  
          | 25-06-2023 | pulli: | 3x fledged chicks, is    G-7|G still allive? |  |  below: Caspian Gull cachinnans  7|H 3CY, February 19 2025, Getaria - Guipúzcoa, Spain.  Picture:  Oliver Perez Amas.
 below: Caspian Gull cachinnans  7|H 1CY, July 08 2023, Lelystad colony, the Netherlands.  Picture:  Thijs Horst & Mars Muusse.
 
 
 below: Caspian Gull cachinnans  7|H 1CY, June 25 2023, Lelystad colony, the Netherlands.  Picture: Thijs Horst.With unringed sibling. Three chicks fledged from nest 3. 
 below: Caspian Gull cachinnans  7|H 1CY, June 18 2023, Lelystad colony, the Netherlands.  Picture: Thijs Horst & Mars Muusse.
 below: Caspian Gull cachinnans  7|H 1CY, May 18 2023, Lelystad colony, the Netherlands.  Picture:  Thijs Horst.
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