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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Breeding biology
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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

Lesser Black-backed Gull graellsii 3.R 1CY-3CY, September 2022 - July 2024, the Netherlands & , Spain. Picture: David Cerezo, 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 red 3.R and metal NLA 5.623.578, ringed as pullus Lesser Black-backed Gull (Larus fuscus) on 26-05-2022 at colony De Kreupel (IJsselmeer), the Netherlands (NL 5247.00 n 513.00 E), by ringer Leon Kelder.

Recoveries:
29-08-2022 Islantilla (Strand), Huelva, SPANJE 3.712,00 N 713,00 W colourring read Publieke melder
09-09-2022 Ayamonte (Isla Canela), Huelva, SPANJE 3.712,00 N 719,00 W colourring read David Cerezo
19-07-2024 IJsselmeer (De Kreupel), Noord-Holland, NL 5.247,00 N 513,00 E colourring read T. Horst & M. Muusse
28-07-2024 IJsselmeer (De Kreupel), Noord-Holland, NL 5.247,00 N 513,00 E colourring read T. Horst & M. Muusse
05-08-2024 IJsselmeer (De Kreupel), Noord-Holland, NL 5.247,00 N 513,00 E colourring read T. Horst, M. Muusse & T. Muusse

Bird from De Kreupel, nest F1 on island F. 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
26-5-2022 3 pulli in nest, r-3.R & metal re-used here 5623578 Red 3.R 48.0 63
Herring Gull 5623604 Red 4.D 46.3 48
5623605 Red 4.E 53.0 93

Previously, colour ring r-3.R was used in nest J1, but that 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)
29-4-2022   3 eggs
13-5-2022 2 eggs & 1 hatching egg
20-5-2022 2 pulli, 1 egg 5623578 Red 3.R 59.2 117
5623579 Red 3.S 58.3 112
26-5-2022 1 dead chick, r-3.R & metal will be re-used 5623578 Red 3.R

below: Lesser Black-backed Gull graellsii 3.R 3CY, July 28 2024, colony De Kreupel, the Netherlands. Picture: Thijs Horst & Mars Muusse.

below: Lesser Black-backed Gull graellsii 3.R 3CY, July 19 2024, colony De Kreupel, the Netherlands. Picture: Thijs Horst & Mars Muusse.

below: Lesser Black-backed Gull graellsii 3.R 1CY, September 09 2022, Ayamonte, Spain. Picture: David Cerezo.

At the ringing session, we sometimes have neighbour's chicks in a nest (and this has been proven by recordings on the camera traps, where sometimes a group of up to 5 chicks are fed by just one parent).
Maybe a neighbour's Lesser Black-backed Gull chick ended up in nest J1?