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 FG 1CY-2CY, May 2021 & February 2022, De Kreupel & Bunschoten, the Netherlands. Picture: Leon Kelder & Merijn Loeve.

Pale blue tibia ring p[FG] and metal NLA 5.556.706, ringed as pullus Larus argentatus-type on May 14 2021 at nest XLHD 21 in colony De Kreupel, the Netherlands.
ID uncertain but probably backcross: unringed mother is Herring Gull argentatus and German ringed father is hybrid type.

Recoveries:
07-11-2021 IJsselmeer (De Kreupel), Noord-Holland, NL 5.247,00 N 513,00 E colourring read Leon Kelder
25-02-2022 Bunschoten-Spakenburg (Visverwerker), Utrecht, NL 5.215,00 N 523,00 E colourring read Albert de Jong & Merijn Loeve
09-07-2022 Markermeer (Marker Wadden), Flevoland, NL 5.235,00 N 522,00 E found dead Maarten Hotting

below: Herring Gull argentatus hybrid FG 2CY, February 25 2022, Bunschoten, the Netherlands. Picture: Merijn Loeve.

Very much like Herring Gull.

below: Herring Gull argentatus hybrid FG 1CY, May 14 2021, De Kreupel, the Netherlands. Picture: Leon Kelder.