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.K 2CY, March 08 2023, Bunschoten, the Netherlands. Picture: Hans van Muiswinkel.

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

Red tibia R-2K and metal NLA Arnhem 5.623.540, ringed as pullus Larus cachinnans on 13-05-2022 at De Kreupel, Holland (5247.00 N 513.00 E) - ringer Leon Kelder.
ID certain: both parents are Caspian Gulls.

Recoveries:
08-03-2023 Bunschoten-Spakenburg (Visverwerker), Utrecht, NL 5.215,00 N 523,00 E colourring read Hans van Muiswinkel
19-06-2023 IJsselmeer (De Kreupel), Noord-Holland, NL 5.247,00 N 513,00 E colourring read Leon Kelder

Bird from De Kreupel, nest M8 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)
14-4-2022 A-egg 68.4 47.5 3 eggs
B-egg 65.3 47.8
C-egg 66.0 47.0
29-4-2022 3 eggs
13-5-2022 3 pulli in nest 5623539 Red 2.H 62.7 179
5623540 Red 2.K 58.0 132
5623541 Red 2.L 55.6 112
6-5 - 9-5-2022 camera trap: female Caspian Gull
male Caspian Gull

below: Caspian Gull cachinnans 2.K 2CY, March 08 2023, Bunschoten, the Netherlands. Picture: Hans van Muiswinkel.