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 2.F 1CY-4CY, 2022-2025, England & the Netherlands. Picture: Wayne Turner, Mars Muusse & Thijs Horst.

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

Tibia red 2.F and metal NLA 5.623.537, ringed as pullus Caspian Gull (Larus cachinnans) on 13-05-2022 at colony De Kreupel (IJsselmeer), the Netherlands (NL 5247.00 n 513.00 E), by ringer Leon Kelder.

Recoveries:
23-08-2022 L'Erée (Strand), Guernsey, ENGELAND 4.927,00 N 239,00 W colourring read Wayne Turner
15-04-2023 Almere (De Vaart), Flevoland, NL 5.224,00 N 514,00 E colourring read Eric Roeland
20-04-2023 Almere (De Vaart), Flevoland, NL 5.224,00 N 514,00 E colourring read Thijs Horst
16-06-2023 IJsselmeer (De Kreupel), Noord-Holland, NL 5.247,00 N 513,00 E colourring read Leon Kelder
04-07-2024 IJsselmeer (De Kreupel), Noord-Holland, NL 5.247,00 N 513,00 E colourring read Leon Kelder
28-07-2024 IJsselmeer (De Kreupel), Noord-Holland, NL 5.247,00 N 513,00 E colourring read T. Horst & M. Muusse
30-07-2024 IJsselmeer (De Kreupel), Noord-Holland, NL 5.247,00 N 513,00 E colourring read J. van Assema & T. Horst
08-04-2025 IJsselmeer (De Kreupel), Noord-Holland, NL 5.247,00 N 513,00 E colourring read T. Horst & M. Muusse

Data for this nest in 2022

Bird from De Kreupel, nest M7 on island M. Parent is r-0D.

Date: Egg code Height (mm)  Width (mm) Comments Metal NLA Colour ring Wing (mm) Head+ bill (mm) Bill (mm) Mass (gr) Gonys Tarsus Swab no
14-4-2022 A-egg 65.9 50.7 1 egg
29-4-2022 2 eggs
Adult trapped, Caspian Gull 6214035 Red 0.D 435 126.6 58.2 877 17.7 73.1 1067
13-5-2022 2 pulli in nest 5623537 Red 2.F 50.4 80
5623538 Red 2.G 52.3 93
20-5-2022 1 dead chick: NLA 5623538 & r-2G
prey: 1 head of young Hare
12-5 - 14-5-2022 camera trap: female Caspian Gull r-0D
male Caspian Gull

below: Caspian Gull cachinnans 2.F 4CY, April 08 2025, colony De Kreupel, the Netherlands. Picture: Thijs Horst & Mars Muusse.

below: Caspian Gull cachinnans 2.F 3CY, July 30 2024, colony De Kreupel, the Netherlands. Picture: Thijs Horst.

below: Caspian Gull cachinnans 2.F 2CY, April 20 2023, Almere - De Vaart, the Netherlands. Picture: Thijs Horst.

below: Caspian Gull cachinnans 2.F 1CY, August 23 2022, L'Eree - Guernsey, England. Picture: Wayne Turner.