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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International trend
National trend
Site characteristics
Breeding biology
Fecundity
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Nonbreeding season
Breeding species
Hybrid scores
Ring codes
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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 1.P 3CY, January 16 2024, Almere - De Vaart, the Netherlands. Picture: 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-1P and metal ring Arnhem 5.623.514, ringed as pullus Larus cachinnans on May 13 2022 at IJsselmeer (De Kreupel), Holland (5247.00 N 513.00 E) - ringer Leon Kelder.

Recoveries:
01-12-2022 Wissant (Strand), Pas-de-Calais, Frankrijk 5.053,00 N 140,00 E colourring read Jan Talloen
25-02-2023 Almere (De Vaart), Flevoland, NL 5.224,00 N 514,00 E colourring read Eric Roeland
16-01-2024 Almere (De Vaart), Flevoland, NL 5.224,00 N 514,00 E colourring read T. Horst & M. Muusse
18-01-2024 Almere (De Vaart), Flevoland, NL 5.224,00 N 514,00 E colourring read T. Horst & M. Muusse

Bird from De Kreupel, nest L8 on island L. Data for this nest:

Date: Egg code Height (mm)  Width (mm) Comments Metal NLA Colour ring Wing (mm) Head+ bill (mm) Mass (gr) Swab no
14-4-2022 A-egg 71.1 51.2 3 eggs
B-egg 71.7 51.9
C-egg 67.8 50.1
29-4-2022 3 eggs
13-5-2022 3 pulli in nest 5623512 Red 1.M 59.4 147
5623513 Red 1.N 56.1 126
5623514 Red 1.P 53.5 90
3-6-2022 3 pulli in nest 5623512 Red 1.M 225.5 102.6 849 952
5623513 Red 1.N 214.5 97.5 766 951
5623514 Red 1.P 205.0 107.0 761 953

below: Caspian Gull cachinnans 1.P 3CY, January 16 2024, Almere - De Vaart, the Netherlands. Picture: Thijs Horst & Mars Muusse.