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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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

Caspian Gull cachinnans K.F adult, April 2021 - January 2023, the Netherlands. Pictures: Merijn Loeve, Fred Visscher & Jeroen van Assema.

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

Red tibia R-KF and metal NLA Arnhem 6.211.441, ringed as breeding adult male Larus cachinnans on 23-04-2021 at IJsselmeer (De Kreupel), Holland (NL 5247.00 N 513.00 E) - ringer Roland-Jan Buijs.

Recoveries:
31-10-2021 Medemblik (Gemaal Lely), Noord-Holland, NL 5.246,00 N 506,00 E colourring read Jeroen van Assema
26-01-2023 Middenmeer (Oostlanderweg), Noord-Holland, NL 5.246,00 N 502,00 E colourring read Fred Visscher
18-04-2023 IJsselmeer (De Kreupel), Noord-Holland, NL 5.247,00 N 513,00 E colourring read Leon Kelder
07-07-2023 IJsselmeer (De Kreupel), Noord-Holland, NL 5.247,00 N 513,00 E found dead Leon Kelder

below: Caspian Gull cachinnans K.F adult, January 26 2023, Middenmeer, the Netherlands. Picture: Fred Visscher.

below: Caspian Gull cachinnans K.F adult, October 31 2021, Medemblik, the Netherlands. Picture: Jeroen van Assema.

Caspian Gull cachinnans K.F adult, April 23 2021, De Kreupel - D, the Netherlands. Pictures: Merijn Loeve.

Coordinator: Leon Kelder. Ringers: Roland-Jan Buijs, Leon Kelder & Merijn Loeve.

date: egg no: width (mm): length (mm): volume (cm3):      comments:
09-4-2021 A 51.2 73.5       1 cold egg. Location is Kreupel - D nest 2
23-4-2021 A 51.3 73.7       3 warm eggs. One parent trapped at nest.
23-4-2021 B 50.8 74.4      
23-4-2021 C 49.1 71.1      
             

r[K.F] and metal NLA 6.211.441, Caspian Gull 4+CY male, sub-adult markings on primary coverts indicate 5CY bird.
Wing: 484
Head + Bill: 138,3
Bill: 67,3
Bill height: 20,0
Tarsus: 74,5
Kodak grey scale: 6,5
Weight: 1095
Moult in primaries: P1-P10 old.