| Coordinators:Albert de Jong
 Leon Kelder
 Roland-Jan Buijs
 Thijs Horst
 Merijn Loeve
 Mars Muusse
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 | Caspian Gull cachinnans  C|S 1CY, May-June 2024, Lelystad colony, the Netherlands.  Picture: Thijs Horst & Mars Muusse.
        
          | You can participate in this project too! 
            Please send in your observations of colour ringed birds to: ring@buijsecoconsult.nl |  Tibia ring G-C|S and metal NLA 5.631.197, ringed as pullus Larus cachinnans on May 14 2024 in nest rCS-2024 at Lelystad, the Netherlands. Ringed by Mars Muusse (Roland-Jan Buijs ringing team).       Recoveries:04-06-2024 Lelystad (Bataviahaven), Flevoland, NL 5.230,00 N 525,00 E colourring read T. Horst & M. Muusse
 24-06-2024 Lelystad (Bataviahaven), Flevoland, NL 5.230,00 N 525,00 E colourring read Thijs Horst
 25-06-2024 Lelystad (Bataviahaven), Flevoland, NL 5.230,00 N 525,00 E colourring read T. Horst & M. Muusse
 12-05-2025 Cromer (Strand), Norfolk, ENGELAND 5.255,00 N 118,00 E colourring read Allan Hale
 Visits and       data 2024. 
        
        
        
          | NEST code | parent 1 | parent  2 | A_length | A_width | A_volume | B_length | B_width | B_volume | C_length | C_width | C_volume | TOTAL    NEST: |  
          | r-C.S 2024 | cach | cach | 74,6 | 50,1 | 94,28 | 72,1 | 49,8 | 90,03 | 71,1 | 50,3 | 90,57 | 274,88 |  
          |  | # eggs | A-egg | hatch | # ringed chicks | # all chicks | # fledged chicks | comments |  |  |  |  |  |  
          |  | 3 | 10-4-2024 | 6-5-2024 |  |  |  |  |  
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          | dam: | dam 1 T-split |  |  |  |  |  |  |  |  |  |  |  |  
          | location: | Like 2023: on W-part, border    bitumen - blocks. Visible from north side. Moved 2 mtr north, compared to    2023. |  
          | parents? | R-CS is back, and with partner 2022? |  |  |  |  |  |  |  
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          | ring pulli: | 11-May |  |  |  |  |  |  |  |  |  |  |  |  |  
          | date | darvic | metal | location / nest# | species | sexe | age | wing | mass | head+ bill | bill | tarsus | gonys | greyscale |  
          | 14-05-2024 | g-C|S | .5631197 | nest r-CS / 108 | PONT |  | 1CY |  | 252 |  |  |  |  |  |  
          | 14-05-2024 | g-C|A | .5631198 | nest r-CS / 108 | PONT |  | 1CY |  | 183 |  |  |  |  |  |  
          | 04-06-2024 | g-C|S | .5631197 | nest r-CS / 108 | PONT |  | 1CY | 235 | 610 | 103,9 |  |  |  |  |  
          | 04-06-2024 | g-C|A | .5631198 | nest r-CS / 108 | PONT |  | 1CY | 221 | 778 | 105,7 |  |  |  |  |  
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          | OBSERVATIONS: |  |  |  |  |  |  |  |  |  |  |  |  |  
          | 12-04-2024 | eggs: | 2 eggs, measured. |  
          | 21-04-2024 | eggs: | 3 eggs, measured. |  
          |  | nest: | orange safety ring added |  
          | 23-04-2024 | adults: | present are r-CS and brutal male partner cachinnans with yellow legs. |  
          | 07-05-2024 | eggs: | 1x hatching. |  
          |  | chicks: | 2x wet chicks, not ringed. |  
          | 14-05-2024 | chicks: | 2x ringed, 3rd chick not found. |  
          | 04-06-2024 | chick: | g-C|A & g-C|S present. measured. |  
          |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  below: Caspian Gull cachinnans  C|S 1CY, June 25 2024, Lelystad colony, the Netherlands.  Picture: Thijs Horst.Chicks g-C|A & g-C|S at nest. 
 below: Caspian Gull cachinnans  C|S 1CY, June 04 2024, Lelystad colony, the Netherlands.  Picture: Thijs Horst, Mars Muusse & Albert de Jong.
 below: Caspian Gull cachinnans  C|S 1CY, May 14 2024, Lelystad colony, the Netherlands.  Picture: Thijs Horst & Mars Muusse.
      
      
      
      
      
        | date | darvic | metal | location / nest# | species | sexe | age | wing | mass |  
        | 14-05-2024 | g-C|S | .5631197 | nest r-CS / 108 | PONT |  | 1CY |  | 252 |  
        | 14-05-2024 | g-C|A | .5631198 | nest r-CS / 108 | PONT |  | 1CY |  | 183 |  
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