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

Home

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 0.F adult, February 2023 - July 2024, De Kreupel & Almere, the Netherlands. Picture: Eric Roeland, 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 R-0F and metal 6.214.037, ringed as adult female Larus cachinnans on April 29 2022 at IJsselmeer (De Kreupel), Holland (5247.00 N 513.00 E), by ringer Roland-Jan Buijs.

Recoveries:
24-02-2023 Almere (De Vaart), Flevoland, NL 5.224,00 N 514,00 E colourring read Eric Roeland
25-02-2023 Almere (De Vaart), Flevoland, NL 5.224,00 N 514,00 E colourring read Eric Roeland
19-07-2024 IJsselmeer (De Kreupel), Noord-Holland, NL 5.247,00 N 513,00 E colourring read T. Horst & M. Muusse

Bird from De Kreupel, nest L23 on island L. 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 eieren
trapped adult Caspian Gull 6214037 Red 0.F 448 124.1 60.5 1028 72.8 17.6 1069
13-5-2022 2 eggs, 1 egg hatching
20-5-2022 3 pulli in nest 5623567 Red 3.D 67.2 225
5623568 Red 3.E 60.2 131
5623569 Red 3.F 64.4 228
23-6-2022 1 pullus in colony 5623568 Red 3.E 335.5 128.6 1302 291
20-5 - 25-5-2022 camera trap: Caspian Gull r-0F
Caspian Gull partner

below: Caspian Gull cachinnans 0.F adult, July 19 2024, colony De Kreupel, the Netherlands. Picture: Thijs Horst & Mars Muusse.

below: Caspian Gull cachinnans 0.F adult, February 25 2023, Almere, the Netherlands. Picture: Eric Roeland.

below: Caspian Gull cachinnans 0.F adult, February 24 2023, Almere, the Netherlands. Picture: Eric Roeland.