Coordinators:
Albert de Jong
Leon Kelder
Roland-Jan Buijs
Thijs Horst
Merijn Loeve
Mars Muusse
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Caspian Gull cachinnans F:= 2CY, January 16 2026, Ondarroa, Spain. Picture: Juan Carlos Andrés.
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Please send in your observations of colour ringed birds to: ring@buijsecoconsult.nl |
Tibia Y-F:= and metal NLA 5.639.349, ringed as pullus Larus cachinnans on July 04 2025 at IJsselmeer (De Kreupel), Noord-Holland, by ringer Leon Kelder.
Recoveries:
12-01-2026 San Sebastián (Urumea river), Gipuzkoa, SPANJE 4.319,00 N 158,00 W colourring read Itziar Gutierrez
14-01-2026 San Sebastián (Urumea river), Gipuzkoa, SPANJE 4.319,00 N 158,00 W colourring read Itziar Gutierrez
16-01-2026 Ondarroa (Strand), Bizkaia, SPANJE 4.319,00 N 225,00 W colourring read Juan Carlos Andrés
Data for nest ? - 2025.
| Metal ring |
Colour ring |
Date |
Species |
Age |
Clutch size |
Location |
Nest code |
Ringer |
Head+Bill |
Mass |
Wing |
Parents |
| NLA 5639349 |
y-F:= |
04-7-2025 |
Caspian Gull |
pullus |
-- |
the Netherlands, De Kreupel - eiland H. |
|
Leon Kelder |
122,0 |
956,0 |
337,0 |
|
below: Caspian Gull cachinnans F:= 2CY, January 16 2026, Ondarroa, Spain. Picture: Juan Carlos Andrés.

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