| Coordinator: Albert de Jong
 Merijn Loeve
 Roland-Jan Buijs
 Thijs Horst
 Leon Kelder
 Mars Muusse
 Home Project InfoInternational trend
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 Nests at De Kreupel 2020nest  r-02P4 20
 nest y-X804 20
 nest D01 20
 nest D02 20
 nest D03 20
 nest L01 20
 nest L02 20
 nest L03 20
 nest M02 20
 Nests at De Kreupel 2021nest  r-02P4 20
 nest w-201U 21
 nest g-XLHD 21
 nest r-KA 21
 nest r-KB 21
 nest r-KC 21
 nest r-KD 21
 nest r-KE 21
 nest r-KF 21
 nest r-KH 21
 nest r-KJ 21
 nest r-KK 21
 nest A01 21
 nest C03 21
 nest C04 21
 nest C06 21
 nest D01 21
 nest D03 21
 nest D05 21
 nest D06 21
 nest D07 21
 nest D08 21
 nest E01 21
 nest H01 21
 nest L01 21
 nest L02 21
 nest L05 21
 nest L06 21
 nest L07 21
 nest M01 21
 nest M04 21
 nest M06 21
 nest Q01 21
 | Caspian Gull cachinnans 2.6 3CY,  March-July  2024, De Kreupel, Almere & Lelystad, the Netherlands. Picture: Eric Roeland, Mars Muusse & Thijs Horst.
      
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              Please send in your observations of colour ringed birds to: ring@buijsecoconsult.nl |  |  Tibia  R-26 and metal NLA 5.623.559, ringed as pullus Larus cachinnans on May 20 2022 at  IJsselmeer (De Kreupel), Holland (5247.00 N 513.00 E). Ringer: Leon Kelder. Recoveries:13-01-2023 Westkapelle (Vroon van Westkapelle), Zeeland, NL 5.132,00 N 326,00 E colourring read Merijn Loeve
 28-03-2024 Den Hoorn (Mokbaai), Texel, NL 5.300,00 N 445,00 E colourring read Job ten Horn
 30-03-2024 Almere (De Vaart), Flevoland, NL 5.224,00 N 514,00 E colourring read Eric Roeland
 31-03-2024 Lelystad (Bataviahaven), Flevoland, NL 5.230,00 N 525,00 E colourring read T. Horst & M. Muusse
 08-06-2024 IJsselmeer (De Kreupel), Noord-Holland, NL 5.247,00 N 513,00 E colourring read Leon Kelder
 16-06-2024 IJsselmeer (De Kreupel), Noord-Holland, NL 5.247,00 N 513,00 E colourring read Leon Kelder
 29-06-2024 IJsselmeer (De Kreupel), Noord-Holland, NL 5.247,00 N 513,00 E colourring read Leon Kelder
 30-06-2024 IJsselmeer (De Kreupel), Noord-Holland, NL 5.247,00 N 513,00 E colourring read Leon Kelder
 08-07-2024 IJsselmeer (De Kreupel), Noord-Holland, NL 5.247,00 N 513,00 E colourring read Leon Kelder
 12-07-2024 IJsselmeer (De Kreupel), Noord-Holland, NL 5.247,00 N 513,00 E colourring read Leon Kelder
 15-07-2024 IJsselmeer (De Kreupel), Noord-Holland, NL 5.247,00 N 513,00 E colourring read Leon Kelder
 17-07-2024 IJsselmeer (De Kreupel), Noord-Holland, NL 5.247,00 N 513,00 E colourring read Leon Kelder
 19-07-2024 IJsselmeer (De Kreupel), Noord-Holland, NL 5.247,00 N 513,00 E colourring read Leon Kelder, T. Horst & M. Muusse
 21-07-2024 IJsselmeer (De Kreupel), Noord-Holland, NL 5.247,00 N 513,00 E colourring read Leon Kelder
 22-07-2024 IJsselmeer (De Kreupel), Noord-Holland, NL 5.247,00 N 513,00 E colourring read Leon Kelder
 23-07-2024 IJsselmeer (De Kreupel), Noord-Holland, NL 5.247,00 N 513,00 E colourring read Leon Kelder
 26-07-2024 IJsselmeer (De Kreupel), Noord-Holland, NL 5.247,00 N 513,00 E colourring read Leon Kelder
 28-07-2024 IJsselmeer (De Kreupel), Noord-Holland, NL 5.247,00 N 513,00 E colourring read T. Horst & M. Muusse
 30-07-2024 IJsselmeer (De Kreupel), Noord-Holland, NL 5.247,00 N 513,00 E colourring read Leon Kelder, J. van Assema & T. Horst
 Bird from De Kreupel, nest M12 on island M. Data for this nest: 
        
        | Date: | Egg code | Height (mm) | Width (mm) | Comments | Metal NLA | Colour ring | Wing (mm) | Head+ bill (mm) | Bill (mm) | Mass (gr) | Swab no |  
        |  |  |  |  |  |  |  |  |  |  |  |  |  
        | 14-4-2022 | A-egg | 74.0 | 47.4 | 3 eggs |  |  |  |  |  |  |  |  
        |  | B-egg | 75.9 | 48.8 |  |  |  |  |  |  |  |  |  
        |  | C-egg | 79.2 | 47.5 |  |  |  |  |  |  |  |  |  
        |  |  |  |  |  |  |  |  |  |  |  |  |  
        | 29-4-2022 |  |  |  | 3 eggs |  |  |  |  |  |  |  |  
        |  |  |  |  |  |  |  |  |  |  |  |  |  
        | 13-5-2022 |  |  |  | 1 pullus out of  nest | 5623544 | Red 2.P | 48 | 71.3 |  | 314 |  |  
        |  |  |  |  |  |  |  |  |  |  |  |  |  
        | 20-5-2022 |  |  |  | 3 pulli out of nest | 5623544 | Red 2.P | 128 | 87.9 |  | 620 |  |  
        |  |  |  |  |  | 5623558 | Red 2.5 | 82 | 79.8 |  | 422 |  |  
        |  |  |  |  |  | 5623559 | Red 2.6 | 105 | 83.5 |  | 508 |  |  
        |  |  |  |  |  |  |  |  |  |  |  |  |  
        | 3-6-2022 |  |  |  | 1 pullus on island Q | 5623544 | Red 2.P | 274.5 | 108.1 |  | 846 | 977 |  below: Caspian Gull cachinnans 2.6 3CY, July 28 2024, colony De Kreupel, the Netherlands.  Picture: Thijs Horst & Mars Muusse.
 below: Caspian Gull cachinnans 2.6 3CY, July 19 2024, colony De Kreupel, the Netherlands.  Picture: Thijs Horst & Mars Muusse.
 below: Caspian Gull cachinnans 2.6 3CY, March 31 2024, colony Lelystad, the Netherlands.  Picture: Mars Muusse & Thijs Horst.
 
 below: Caspian Gull cachinnans 2.6 3CY,  March 30 2024, Almere, the Netherlands. Picture: Eric Roeland.
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