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 2.3 1CY-3CY, July 2022 - July 2024, De Kreupel, the Netherlands. Picture: Jeroen van Assema & Thijs Horst.

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

Tibia R-23 and metal Arnhem 5.623.556, ringed as pullus Larus cachinnans on May 20 2022 at IJsselmeer (De Kreupel), Holland (5247.00 N, 513.00 E). Ringer: Leon Kelder.

Recoveries:
01-07-2022 IJsselmeer (De Kreupel), Noord-Holland, NL 5.247,00 N 513,00 E colourring read Jeroen van Assema
20-08-2022 Vlissingen-Oost (Vuiloverslag RCZ), Zeeland, NL 5.126,00 N 344,00 E colourring read Mark Zevenbergen
30-07-2024 IJsselmeer (De Kreupel), Noord-Holland, NL 5.247,00 N 513,00 E colourring read J. van Assema & T. Horst

Bird from De Kreupel, nest P2 on island P. 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)
20-5-2022 A-egg 2 pulli at nest 5623556 Red 2.3 77.5 76.8 405
Red 2.4 97.5 81.8 528
26-5-2022 1 dead chick at nest, unringed

below: Caspian Gull cachinnans 2.3 3CY, July 30 2024, colony De Kreupel, the Netherlands. Picture: Thijs Horst.

below: Caspian Gull cachinnans 2.3 1CY, July 01 2022, De Kreupel, the Netherlands. Picture: Jeroen van Assema.

With r-2.4.