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 2.8 1CY-2CY, November 2022 - January 2023, Katwijk & Bunschoten, the Netherlands. Picture: Mars Muusse & Hans van Muiswinkel.

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

Ribia R-28 and metal ring NLA Arnhem 5.623.561, rfinged as pullus Larus cachinnans on May 20 2022 at nest M10 (island M) - De Kreupel, Holland (5247.00 N 513.00 E). Ringer: Leon Kelder.

Recoveries:
15-11-2022 Katwijk aan Zee (Strand), Zuid-Holland, NL 5.213,00 N 424,00 E colourring read Annelies Marijnis
08-01-2023 Barneveld (Vuilstort), Gelderland, NL 5.209,00 N 537,00 E colourring read Maarten Hotting
24-01-2023 Bunschoten-Spakenburg (Visverwerker), Utrecht, NL 5.215,00 N 523,00 E colourring read Hans van Muiswinkel
05-03-2023 Kampen (Vossemeerplaat), Overijssel, NL 5.233,00 N 550,00 E colourring read G.J. Gerritsen
12-03-2023 Almere (De Vaart), Flevoland, NL 5.224,00 N 514,00 E colourring read Eric Roeland
17-03-2023 Barneveld (Vuilstort), Gelderland, NL 5.209,00 N 537,00 E colourring read August van Steensel
20-03-2023 Onderdijk (Vooroever), Noord-Holland, NL 5.244,00 N 508,00 E colourring read Leon Kelder
20-06-2023 IJsselmeer (De Kreupel), Noord-Holland, NL 5.247,00 N 513,00 E colourring read Leon Kelder

Bird from De Kreupel, nest M10 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)
29-4-2022   3 eggs
13-5-2022 3 eggs
20-5-2022 3 pulli in nest 5623560 Red 2.7 61.0 160
pellet = spike perch 10 cm 5623561 Red 2.8 57.1 121
5623562 Red 2.9 65.5 225

below: Caspian Gull cachinnans 2.8 2CY, January 14 2023, Bunschoten-Spakenburg, the Netherlands. Picture: Hans van Muiswinkel.

below: Caspian Gull cachinnans 2.8 1CY, November 15 2022, Katwijk, the Netherlands. Picture: Mars Muusse.