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 0.G adult, July 2023 - March 2024, De Kreupel, the Netherlands. Picture: Leon Kelder, Thijs Horst & Mars Muusse.

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

Tibia ring r-0G and metal NLA 6.214.038, ringed as adult male Larus cachinnans on April 29 2022 at nest L13 at De Kreupel, Holland (5247.00 N 513.00 E) - ringer Roland-Jan Buijs.

Recoveries:
29-07-2022 IJsselmeer (De Kreupel), Noord-Holland, NL 5.247,00 N 513,00 E colourring read Leon Kelder
28-07-2023 IJsselmeer (De Kreupel), Noord-Holland, NL 5.247,00 N 513,00 E colourring read Leon Kelder
03-03-2024 IJsselmeer (De Kreupel), Noord-Holland, NL 5.247,00 N 513,00 E colourring read T. Horst & M. Muusse

Bird from De Kreupel, nest L13 on island L. Data for this nest:

Date: Egg code Height (mm)  Width (mm) Comments Metal NLA Colour ring Wing (mm) Head+ bill (mm) Bill (mm) Mass (gr) Tarsus Gonys Swab no
14-4-2022 A-egg 71.2 50.6 3 eggs
B-egg 74.5 49.4
C-egg 69.6 49.9
29-4-2022 3 eggs
Adult trapped, Caspian Gull 6214038 Red 0.G 466 132.2 62.2 75.6 19.5 1070
13-5-2022 2 pulli outside nest 5623518 Red 1.U 71.5 78.6 420
5623519 Red 1.V 66.0 76.5 400

below: Caspian Gull cachinnans 0.G adult, March 03 2024, colony De Kreupel, the Netherlands. Picture: Thijs Horst & Mars Muusse.

below: Caspian Gull cachinnans 0.G adult, July 28 2023, De Kreupel, the Netherlands. Picture: Leon Kelder.