Larus cachinnans in the Netherlands

(last update: August 16, 2020)

Coordinators:
Albert de Jong
Leon Kelder
Roland-Jan Buijs
Thijs Horst
Merijn Loeve
Mars Muusse

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Caspian Gull cachinnans C|8 1CY, 2025, Jersey, England & Málaga, Spain. Picture: Mário Estevens, Romano da Costa & Salvador García Barcelona.

You can participate in this project too! Please send in your observations of colour ringed birds to: ring@buijsecoconsult.nl

Tibia G-C|8 and metal NLA 5.641.967, ringed as pullus Larus cachinnans on June 18 2025 at nest IJburg01 - Amsterdam, the Netherlands. Ringed by Roland-Jan Buijs ringing team (Mars Muusse / Thijs Horst / Fred Cottaar).
ID certain in 2025: both parents are sub-adult Caspian Gull cachinnans.

Recoveries:
12-08-2025 St.Ouen's Bay (Strand), Jersey, ENGELAND 4.920,00 N 222,00 W colourring read Romano da Costa & Joanna Bramley
28-11-2025 Los Asperones (Vuilstort), Málaga, SPANJE 3.644,00 N 431,00 W colourring read Dave Murray & Salvador García Barcelona
20-12-2025 Monte Gordo (Strand), Algarve, PORTUGAL 3.711,00 N 727,00 W colourring read R. Buijs & R.J. Buijs
24-12-2025 Monte Gordo (Strand), Algarve, PORTUGAL 3.711,00 N 727,00 W colourring read Roland-Jan Buijs
25-12-2025 Monte Gordo (Strand), Algarve, PORTUGAL 3.711,00 N 727,00 W colourring read R. Buijs & R.J. Buijs
26-12-2025 Monte Gordo (Strand), Algarve, PORTUGAL 3.711,00 N 727,00 W colourring read R. Buijs & R.J. Buijs
27-12-2025 Monte Gordo (Strand), Algarve, PORTUGAL 3.711,00 N 727,00 W colourring read R.J. Buijs & S.J.M.P. Halters
28-12-2025 Monte Gordo (Strand), Algarve, PORTUGAL 3.711,00 N 727,00 W colourring read Mário Estevens & Roland-Jan Buijs

Data for this nest in 2025:

date darvic metal nest species sexe age wing mass head+ bill bill gonys barcode comments
18-6-2025 G-C|8 .5641967 IJburg, Buiteneiland PONT pullus 100 555       ringed pullus
                   

Tibia ring G-C|8 was used for a pullus Larus cachinnans on May 02 2024 in nest n-F|8-2024 at Lelystad. That bird was found dead on June 18 2024 in colony Lelystad. Ring used again in 2025.

below: Caspian Gull cachinnans C|8 1CY, December 28 2025, Monte Gordo, Portugal. Picture: Mário Estevens.

below: Caspian Gull cachinnans C|8 1CY, November 28 2025, Los Asperones - Málaga, Spain. Picture: Salvador García Barcelona.

below: Caspian Gull cachinnans C|8 1CY, August 12 2025, St.Ouen's Bay - Jersey, England. Picture: Romano da Costa.