Coordinator:
Albert de Jong
Merijn Loeve
Roland-Jan Buijs
Thijs Horst
Leon Kelder
Mars Muusse
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Caspian Gull cachinnans 3.4 2CY-4CY, 2023-2025, France & the Netherlands. Picture: Philippe Dubois, Thijs Horst & Mars Muusse.
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Tibia R-34 and metal ring Arnhem 5.623.591, ringed as pullus Larus cachinnans on May 20 2022 at nest C1 (island C) - De Kreupel, Holland (5247.00 N 513.00 E), by ringer Leon Kelder.
Recoveries:
17-03-2023 Gueltas (Vuilstort), Morbihan, FRANKRIJK 4.805,00 N 248,00 W colourring read Philippe J. Dubois
27-04-2024 Almere (De Vaart), Flevoland, NL 5.224,00 N 514,00 E colourring read Eric Roeland
12-07-2024 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 J. van Assema & T. Horst
09-09-2024 Ile d' Yeu (Pointe des Corbeaux), Vendée, FRANKRIJK 4.641,00 N 216,00 W colourring read Xavier Hindermeyer
25-03-2025 Almere (De Vaart), Flevoland, NL 5.224,00 N 514,00 E colourring read T. Horst & M. Muusse
08-04-2025 IJsselmeer (De Kreupel), Noord-Holland, NL 5.247,00 N 513,00 E colourring read T. Horst & M. Muusse
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) |
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13-5-2022 |
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3 eggs |
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20-5-2022 |
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3 pulli in nest |
5623589 |
Red 3.2 |
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56.2 |
|
108 |
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Herring Gull? |
5623590 |
Red 3.3 |
|
48.2 |
|
65 |
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|
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|
5623591 |
Red 3.4 |
|
48.9 |
|
69 |
below: Caspian Gull cachinnans 3.4 4CY, April 08 2025, colony De Kreupel, the Netherlands. Picture: Thijs Horst & Mars Muusse.

below: Caspian Gull cachinnans 3.4 4CY, March 25 2025, Almere - De Vaart, the Netherlands. Picture: Thijs Horst & Mars Muusse.

below: Caspian Gull cachinnans 3.4 3CY, September 09 2024, Ile d' Yeu, France. Picture: Xavier Hindermeyer.

below: Caspian Gull cachinnans 3.4 3CY, July 30 2024, colony De Kreupel, the Netherlands. Picture: Thijs Horst.

below: Caspian Gull cachinnans 3.4 3CY, July 28 2024, colony De Kreupel, the Netherlands. Picture: Thijs Horst & Mars Muusse.

below: Caspian Gull cachinnans 3.4 2CY, March 17 2023, Gueltas - Morbihan, France. Picture: Philippe Dubois.

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