Larus cachinnans in the Netherlands

(last update: August 16, 2020)

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Nests at De Kreupel 2020
nest r-02P4 20
nest y-X804 20
nest D01 20
nest D02 20
nest D03 20
nest L01 20
nest L02 20
nest L03 20
nest M02 20

Nests at De Kreupel 2021
nest r-02P4 20
nest w-201U 21
nest g-XLHD 21
nest r-KA 21
nest r-KB 21
nest r-KC 21
nest r-KD 21
nest r-KE 21
nest r-KF 21
nest r-KH 21
nest r-KJ 21
nest r-KK 21
nest A01 21
nest C03 21
nest C04 21
nest C06 21
nest D01 21
nest D03 21
nest D05 21
nest D06 21
nest D07 21
nest D08 21
nest E01 21
nest H01 21
nest L01 21
nest L02 21
nest L05 21
nest L06 21
nest L07 21
nest M01 21
nest M04 21
nest M06 21
nest Q01 21

Herring Gull argentatus hybrid X311 6CY-9CY, March 2021 - July 2024, Andijk & De Kreupel, the Netherlands. Picture: Leon Kelder, Thijs Horst & Mars Muusse.

Tarsus ring y-X311 and metal Hiddensee EA204311, ringed as pullus Larus cachinnans hybrid on June 06 2016 at Gräbendorfer See, Germany.
Breeding season at colony De Kreupel: 2021, 2022, 2023.

In 2021: nest D8.
Y-311 is male parent & unringed female Herring Gull (type).
Nest with 3 eggs.
Nest with 3 chicks. All 3 chicks ringed, and observed one week after ringing in 2021. No subsequent records (within 2021 so far).
B-D|S
B-D|T
B-D|U

In 2022: Nest D1.
Y-X311 is male parent, again nesting on island D.
Nest with 3 eggs.
Nest with 3 chicks. One chick dead in nest, other 2 chicks ringed: r-3X and r-3Y.
June 17 2022 both large juveniles dead in colony. Rings r-3X and 3-3Y re-used in another nest.
Breeding success in 2022: 0.

below: Herring Gull argentatus hybrid X311 9CY, July 28 2024, Andijk harbour, the Netherlands. Picture: Thijs Horst & Mars Muusse.

below: Herring Gull argentatus hybrid X311 9CY, March 03-04 2024, Andijk harbour, the Netherlands. Picture: Thijs Horst & Mars Muusse.

Stubby bill. Broad medial band on P10.

below: Herring Gull argentatus hybrid X311 8CY, February 03 2023, Andijk, the Netherlands. Picture: Leon Kelder.

below: Herring Gull argentatus hybrid X311 7CY, May 20 2022, De Kreupel - D, the Netherlands. Picture: Leon Kelder.

below: Herring Gull argentatus hybrid X311 6CY, March 03 2021, Andijk harbour, the Netherlands. Picture: Leon Kelder.