Coordinators:
Albert de Jong
Leon Kelder
Roland-Jan Buijs
Thijs Horst
Merijn Loeve
Mars Muusse
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Caspian Gull cachinnans 5|C 2CY-3CY, 2025-2026, the Netherlands & France. Picture: Annelies Marijnis & Bertrand Lamothe.
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Tibia G-5|C and metal NLA 5.629.130, ringed as pullus Larus cachinnans on May 09 2024 at De Kreupel, Holland (5247.00 N 513.00 E).
Ringer Leon Kelder.
Recoveries:
01-07-2024 IJsselmeer (De Kreupel), Noord-Holland, NL 5.247,00 N 513,00 E colourring read Leon Kelder
04-07-2024 IJsselmeer (De Kreupel), Noord-Holland, NL 5.247,00 N 513,00 E colourring read Leon Kelder
06-01-2025 Mouguerre (Vuiloverslag), Pyrénées Atlantiques, FRANKRIJK 4.329,00 N 126,00 W colourring read Bertrand Lamothe
15-09-2026 Berkheide (Strand), Zuid-Holland, NL 5.210,00 N 421,00 E colourring read Annelies Marijnis
Nest data 2024:
| Date trapped: |
Metal code |
... |
Tibia: |
Colour: |
Species: |
Age: |
Status |
Clutch size: |
Location: |
Fledged: |
Nest code: |
| 09-05-2024 |
...5629130 |
1 |
5|C |
Green |
5927 |
1 |
- |
1 |
IJsselmeer, Enkhuizen, De Kreupel, eiland Q. |
YES |
Q45 |
| 17-05-2024 |
...5629266 |
1 |
G|5 |
Green |
5927 |
1 |
- |
1 |
IJsselmeer, Enkhuizen, De Kreupel, eiland Q. |
YES |
Q45 |
Clutch size is 1, yet 2 chicks ringed in this nest. One must be from an adjacent nest.
below: Caspian Gull cachinnans 5|C 3CY, September 15 2026, Katwijk, the Netherlands. Picture: Annelies Marijnis.

below: Caspian Gull cachinnans 5|C 2CY, January 06 2025, Mouguerre, France. Picture: Bertrand Lamothe.


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