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 0.D adult, April 29 2022, De Kreupel - M, the Netherlands.

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Tibia ring R-0D and metal NLA Arnhem 6.214.035, ringed as adult female Larus cachinnans on April 29 2022 at IJsselmeer (De Kreupel), Holland (5247.00 N 513.00 E) - ringer Roland-Jan Buijs.

Recoveries:
13-05-2022 IJsselmeer (De Kreupel), Noord-Holland, NL 5.247,00 N 513,00 E colourring read Leon Kelder
10-06-2022 IJsselmeer (De Kreupel), Noord-Holland, NL 5.247,00 N 513,00 E colourring read Leon Kelder
17-06-2022 IJsselmeer (De Kreupel), Noord-Holland, NL 5.247,00 N 513,00 E colourring read Leon Kelder
08-07-2022 IJsselmeer (De Kreupel), Noord-Holland, NL 5.247,00 N 513,00 E colourring read Maarten Hotting
12-09-2022 Blaringhem (Vuilstort), Nord, FRANKRIJK 5.040,00 N 224,00 E colourring read Jan Talloen
18-11-2022 Wissant (Strand), Pas-de-Calais, Frankrijk 5.053,00 N 140,00 E colourring read Jan Talloen
02-07-2023 IJsselmeer (De Kreupel), Noord-Holland, NL 5.247,00 N 513,00 E colourring read Leon Kelder
14-07-2023 IJsselmeer (De Kreupel), Noord-Holland, NL 5.247,00 N 513,00 E colourring read Leon Kelder

Bird from De Kreupel, nest M7 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) Gonys Tarsus Swab no
14-4-2022 A-egg 65.9 50.7 1 egg
29-4-2022 2 eggs
Adult trapped, Caspian Gull 6214035 Red 0.D 435 126.6 58.2 877 17.7 73.1 1067
13-5-2022 2 pulli in nest 5623537 Red 2.F 50.4 80
5623538 Red 2.G 52.3 93
20-5-2023 1 dead chick: NLA 5623538 & r-2G
prey: 1 head of young Hare
12-5 - 14-5-2022 camera trap: female Caspian Gull r-0D
male Caspian Gull