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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Caspian Gull cachinnans 1.K 3CY, May-September 2024, De Kreupel & Lelystad colony, the Netherlands. Picture: 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 ring R-1K and metal ring Arnhem 5.623.510, ringed as pullus Larus cachinnans on May 13 2022 at IJsselmeer (De Kreupel), Holland (5247.00 N 513.00 E) - ringer Leon Kelder.

Recoveries:
10-04-2024 Wervershoof (Vooroever), Noord-Holland, NL 5.245,00 N 507,00 E colourring read Leon Kelder
05-05-2024 Lelystad (Bataviahaven), Flevoland, NL 5.230,00 N 525,00 E colourring read Thijs Horst
07-09-2024 Andijk (Jachthaven), Noord-Holland, NL 5.244,00 N 510,00 E colourring read J. van Assema & T. Horst

Bird from De Kreupel, nest L6 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)
14-4-2022 A-egg 73.7 50.5 3 eggs
B-egg 72.3 50.8
C-egg 73.1 49.8
29-4-2022 3 eggs
13-5-2022 3 pulli in nest 5623508 Red 1.H 60.8 138
5623509 Red 1.J 65.2 102
5623510 Red 1.K 66.6 105

below: Caspian Gull cachinnans 1.K 3CY, September 07 2024, colony De Kreupel, the Netherlands. Picture: Thijs Horst & Mars Muusse.

below: Caspian Gull cachinnans 1.K 3CY, May 05 2024, Lelystad colony, the Netherlands. Picture: Thijs Horst & Mars Muusse.