| Coordinators:Albert de Jong
 Leon Kelder
 Roland-Jan Buijs
 Thijs Horst
 Merijn Loeve
 Mars Muusse
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 | Caspian Gull cachinnans  B|T 1CY, May-July 2024, Lelystad colony, the Netherlands.  Picture: Sylvain Fleur, 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-B|T and metal NLA 5.631.171, ringed as pullus Larus cachinnans on May 14 2024 in nest XCHP-2024 at Lelystad, the Netherlands. Ringed by Mars Muusse (Roland-Jan Buijs ringing team).       Recoveries:31-05-2024 Lelystad (Bataviahaven), Flevoland, NL 5.230,00 N 525,00 E colourring read Thijs Horst
 18-06-2024 Lelystad (Bataviahaven), Flevoland, NL 5.230,00 N 525,00 E colourring read T. Horst & M. Muusse
 15-07-2024 Lelystad (Bataviahaven), Flevoland, NL 5.230,00 N 525,00 E colourring read Thijs Horst
 05-11-2024 IJmuiden (Strand Zuidpier), Noord-Holland, NL 5.228,00 N 434,00 E colourring read Sylvain Fleur
 19-11-2024 Bunschoten-Spakenburg (Visverwerker), Utrecht, NL 5.215,00 N 523,00 E colourring read Hans van Muiswinkel
 11-12-2024 Bunschoten-Spakenburg (Visverwerker), Utrecht, NL 5.215,00 N 523,00 E colourring read Hans van Muiswinkel
 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: |  
          | XCHP  2024 | cach | cach | 70 | 52,6 | 97,51 | 69 | 52,8 | 96,85 | 68 | 51,6 | 91,16 | 285,53 |  
          |  | # eggs | A-egg | hatch | # ringed chicks | # all chicks | # fledged chicks | comments |  |  |  |  |  |  
          |  | 3 | 10-4-2024 | 8-5-2024 |  |  |  |  |  
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          | dam: | dam 2 east |  |  |  |  |  |  |  |  |  |  |  |  
          | location: | below large boulders,    east side of blocks, closer to bitumen than 2022. |  |  |  |  |  |  |  |  
          | parents? | same as 2022, 2023 |  |  |  |  |  |  |  
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          | ring pulli: | 12-May |  |  |  |  |  |  |  |  |  |  |  |  |  
          | date | darvic | metal | location / nest# | species | sexe | age | wing | mass | head+ bill | bill | tarsus | gonys | greyscale |  
          | 14-05-2024 | g-B|S | .5631170 | nest XCHP | PONT |  | 1CY |  | 200 |  |  |  |  |  |  
          | 14-05-2024 | g-B|T | .5631171 | nest XCHP | PONT |  | 1CY |  | 273 |  |  |  |  |  |  
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          | OBSERVATIONS: |  |  |  |  |  |  |  |  |  |  |  |  |  
          | 12-04-2024 | eggs: | 2, measured. |  
          |  | adults: | yXCHP & partner    present |  
          | 21-04-2024 | eggs: | 3 eggs, measured. |  
          | 23-04-2024 | adults: | yXCHP & partner    present |  
          | 02-05-2024 | eggs: | 3 eggs. |  
          | 14-05-2024 | chicks: | 2x ringed and measured. |  
          |  | food: | Round Goby (zwartbekgrondel / Neogobius melanostomus) and worms. |  
          | 04-06-2024 | adult: | y-XCHP & partner present and aggressive. |  
          | 18-06-2024 | chick: | CONTROLL: g-B|T  at water. |  
          |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  below: Caspian Gull cachinnans  B|T 1CY, November 05 2024, IJmuiden, the Netherlands.  Picture: Sylvain  Fleur.
 below: Caspian Gull cachinnans  B|T 1CY, July 15 2024, Lelystad colony, the Netherlands.  Picture: Thijs Horst.
 
 below: Caspian Gull cachinnans  B|T 1CY, June 18 2024, Lelystad colony, the Netherlands.  Picture: Thijs Horst & Mars Muusse.
 
 
 
 below: Caspian Gull cachinnans  B|T 1CY, May 14 2024, Lelystad colony, the Netherlands.  Picture: Thijs Horst & Mars Muusse.
        
        
        
          | 14-05-2024 | g-B|S | .5631170 | nest XCHP | PONT |  | 1CY |  | 200 |  
          | 14-05-2024 | g-B|T | .5631171 | nest XCHP | PONT |  | 1CY |  | 273 |  
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