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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Caspian Gull cachinnans hybrid 5.0 1CY-3CY, May 2022 - April 2024, the Netherlands & Spain.
Picture: Eric Roeland, Thijs Horst, Mars Muusse, Gonzalo Pardo de Santayana, Samuel De la Torre & Rubén Piculo.

Red tibia ring r[5.0] and metal NLA 5.625.129, ringed as pullus Larus cachinnans at nest 221 / y[XCHP] on May 17 2022 in colony Lelystad, the Netherlands. Ringer: Herman Bouman.
ID certain in 2022, both parents are hybrid Caspian Gull cachinnans: mother is hybrid y[XCHP] from Germany and father is hybrid-type 4CY.

Recoveries:
30-05-2022 Lelystad (Bataviahaven), Flevoland, NL 5.230,00 N 525,00 E captured by ringer Albert de Jong
03-12-2022 Santoña (Ría de Boo), Cantabria, SPANJE 4.326,00 N 327,00 W colourring read Rubén Piculo
10-12-2022 Santoña (Ría de Boo), Cantabria, SPANJE 4.326,00 N 327,00 W colourring read Samuel De la Torre
31-12-2022 Santoña (Ría de Boo), Cantabria, SPANJE 4.326,00 N 327,00 W colourring read Gonzalo Pardo de Santayana & Jesús Menéndez
31-03-2023 Almere (De Vaart), Flevoland, NL 5.224,00 N 514,00 E colourring read Eric Roeland
01-04-2023 Almere (De Vaart), Flevoland, NL 5.224,00 N 514,00 E colourring read Jan Zorgdrager
15-04-2023 Almere (De Vaart), Flevoland, NL 5.224,00 N 514,00 E colourring read Eric Roeland
12-04-2024 Almere (De Vaart), Flevoland, NL 5.224,00 N 514,00 E colourring read M. Loeve & M. Muusse

below: Caspian Gull cachinnans hybrid 5.0 3CY, April 12 2024, Almere, the Netherlands. Picture: Merijn loeve & Mars Muusse.

below: Caspian Gull cachinnans hybrid 5.0 3CY, March 30 2024, Almere, the Netherlands. Picture: Eric Roeland.

below: Caspian Gull cachinnans hybrid 5.0 2CY, March 31 2023, Almere, the Netherlands. Picture: Eric Roeland.

below: Caspian Gull cachinnans hybrid 5.0 1CY, December 31 2022, Santoña, Spain. Picture: Gonzalo Pardo de Santayana.

below: Caspian Gull cachinnans hybrid 5.0 1CY, December 10 2022, Santoña, Spain. Picture: Samuel De la Torre.

below: Caspian Gull cachinnans hybrid 5.0 1CY, December 03 2022, Santoña, Spain. Picture: Rubén Piculo.

Both parents are hybrid, but this offspring very much resembles Caspian Gull.
Observers: Rubén Piculo, Carlos Mompó and Mateo Ferrer.

below: Caspian Gull cachinnans hybrid 5.0 1CY, June 28 2022, Lelystad, the Netherlands. Picture: Thijs Horst & Mars Muusse.

r[5.0] cachinnans hybrid from nest 221 y[XCHP]. Picture: June 28th, 2022.
Fledged. Sibling r[5.1], the 2nd chick, also fledged.

Below: primary pattern nice match to Caspian Gull.

below: Caspian Gull cachinnans hybrid 5.0 1CY, June 21 2022, Lelystad, the Netherlands. Picture: Thijs Horst & Mars Muusse.

below: Caspian Gull cachinnans hybrid 5.0 1CY, May 30 2022, Lelystad, the Netherlands. Picture: Mars Muusse.