Larus cachinnans in the Netherlands

(last update: August 16, 2020)
Coordinator:
Albert de Jong
Merijn Loeve
Roland-Jan Buijs
Thijs Horst
Leon Kelder
Mars Muusse

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Breeding biology
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Caspian Gull cachinnans 0.37 adult, July 31 2025, Oostvaardersdijk - Almere, the Netherlands. Picture: Thijs Horst.

Tarsus ring y-0.37, ringed as breeding adult Larus cachinnans in 2025 at De Kreupel, the Netherlands (5247.00 N 513.00 E). Ringer Kees Camphuysen & Leon Kelder.

Recoveries:

Year Mm Dd Location Observer   NOTES
2025 4 25 De Kreupel eiland Q C.J. Camphuysen Ringed, logger 6521 attached, 15:05-15:59, wing 79/21, bright yellow feet
2025 7 31 Oostvaardersdijk thv Almere, op vissersboot Thijs Horst Photo provided, op visboot die aan het vissen was langs de oostvaardersdijk bij Almere (F discards), slightly fluffy plumage

below: Caspian Gull cachinnans 0.37 adult, September 26-28 2025. UvA BITS data plot.

below: Caspian Gull cachinnans 0.37 adult, July 31 2025, Oostvaardersdijk - Almere, the Netherlands. Picture: Thijs Horst.