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 3.P 1CY, May 26 2022, De Kreupel, the Netherlands.

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

Bird from De Kreupel, nest G1 on island G. 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
29-4-2022   3 eggs
trapped adult Caspian Gull 6214040 Red 0.J 463 123.7 55.3 909 72.1 17.1 1075
13-5-2022 3 eggs
26-5-2022 3 pulli in nest 5623603 Red 4.C 55.8 89
colour ring r-3.M re-used here 5623575 Red 3.M 62.6 160
colour ring r-3.P re-used here 5623577 Red 3.P 60.7 147
26-5 - 27-5-2022 camera trap: Caspian Gull male r-0.J
hybrid Caspian Gull female unringed

Previously, colour ring r-3.P was used in nest J2, but the chick died. 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 Swab no
29-4-2022   3 eggs
13-5-2022 3 eggs
20-5-2022 3 pulli in nest 5623575 Red 3.M 61.9 154
male y-P:3K0 alarming 5623576 Red 3.N 57.8 125
female unringed 5623577 Red 3.P 65.6 216
26-5-2022 r-3.M dead, rings will be re-used 5623575 Red 3.M 1153
r-3.P dead, rings will be re-used 5623577 Red 3.P 1154
r-3.N alive in nest 5623576 Red 3.N 1155
3-6-2022 1 pullus at nest 5623576 Red 3.N 126.5 92.7 639 959