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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Project Info
International trend
National trend
Site characteristics
Breeding biology
Fecundity
Food resources
Nonbreeding season
Breeding species
Hybrid scores
Ring codes
Future

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 3.K 1CY, August 16 2022, Onderdijk, the Netherlands. Picture: Theo Ruppert.

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

Tibia ring R-3K and metal NLA Arnhem 5.623.573, ringed as pullus Larus cachinnans on May 20 2022 at IJsselmeer (De Kreupel), Holland (5247.00 N 513.00 E) - ringer Leon Kelder.

Recoveries:
16-8-2022 Onderdijk (Vooroever), Noord-Holland, NL 5.244,00 N 508,00 E colourring read Theo Ruppert

Bird from De Kreupel, nest L14 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 71.6 51.5 1 egg
13-5-2022 1 egg, 2 pullus in nest 5623516 Red 1.S 55.0 112
5623517 Red 1.T 53.3 78
20-5-2022 3 pulli in nest 5623516 Red 1.S
5623517 Red 1.T
5623573 Red 3.K 60.4 131
3-6-2022 1 pullus outside nest 5623516 Red 1.S 216 99.5 792 956

below: Caspian Gull cachinnans 3.K 1CY, August 16 2022, Onderdijk, the Netherlands. Picture: Theo Ruppert.