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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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

Caspian Gull cachinnans 2.F 1CY-2CY, August 2022 - April 2023, England & the Netherlands. Picture: Wayne Turner & 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

Bird from De Kreupel, nest M7 on island M. 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) 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
20-5-2023 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 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.