Larus cachinnans

Larus cachinnans in the Netherlands

(last update: August 16, 2020)

Coordinators:
Albert de Jong
Leon Kelder
Roland-Jan Buijs
Thijs Horst
Merijn Loeve
Mars Muusse

Project Info
International trend
National trend
Site characteristics
Breeding biology
Fecundity
Food resources
Nonbreeding season
Breeding species
Hybrid scores
Ring codes
Future

**Herring Gull argenteus B.N 1CY-5CY, 2021-2025, the Netherlands. Picture: Thijs Horst, Mars Muusse, Eric Roeland & Hans van Muiswinkel.**

Red B.N and metal Arnhem 5.620.084, ringed as pullus on July 02 2021 at colony De Kreupel, the Netherlands (5247.00 N 513.00 E). Ringer: Leon Kelder.

Recoveries:
05-11-2021 Almere (De Vaart), Flevoland, NL 5.224,00 N 514,00 E colourring read Eric Roeland & Thijs Horst
11-11-2021 Almere (De Vaart), Flevoland, NL 5.224,00 N 514,00 E colourring read Thijs Horst
12-11-2021 Almere (De Vaart), Flevoland, NL 5.224,00 N 514,00 E colourring read Eric Roeland
28-11-2021 Almere (De Vaart), Flevoland, NL 5.224,00 N 514,00 E colourring read Eric Roeland
03-12-2021 Almere (De Vaart), Flevoland, NL 5.224,00 N 514,00 E colourring read Eric Roeland
17-12-2021 Almere (De Blocq van Kuffeler), Flevoland, NL 5.225,00 N 513,00 E colourring read Eric Roeland
23-12-2021 Almere (De Vaart), Flevoland, NL 5.224,00 N 514,00 E colourring read Eric Roeland
24-12-2021 Almere (De Vaart), Flevoland, NL 5.224,00 N 514,00 E colourring read Thijs Horst
09-01-2022 Almere (De Vaart), Flevoland, NL 5.224,00 N 514,00 E colourring read Eric Roeland
17-01-2022 Almere (De Vaart), Flevoland, NL 5.224,00 N 514,00 E colourring read Annelies Marijnis
03-02-2022 Bunschoten-Spakenburg (Visverwerker), Utrecht, NL 5.215,00 N 523,00 E colourring read Hans van Muiswinkel
15-02-2022 Bunschoten-Spakenburg (Visverwerker), Utrecht, NL 5.215,00 N 523,00 E colourring read Hans van Muiswinkel
05-07-2022 Almere (De Vaart), Flevoland, NL 5.224,00 N 514,00 E colourring read Thijs Horst
07-10-2022 Almere (De Blocq van Kuffeler), Flevoland, NL 5.225,00 N 513,00 E colourring read Eric Roeland
08-11-2022 Almere (Dashorstdijk), Flevoland, NL 5.225,00 N 512,00 E colourring read Willem van der Waal
18-11-2022 Almere (Dashorstdijk), Flevoland, NL 5.225,00 N 512,00 E colourring read Thijs Horst
09-02-2023 Bunschoten-Spakenburg (Visverwerker), Utrecht, NL 5.215,00 N 523,00 E colourring read Hans van Muiswinkel
20-02-2023 Almere (De Vaart), Flevoland, NL 5.224,00 N 514,00 E colourring read Thijs Horst
21-02-2023 Almere (De Vaart), Flevoland, NL 5.224,00 N 514,00 E colourring read Thijs Horst
01-03-2023 Bunschoten-Spakenburg (Visverwerker), Utrecht, NL 5.215,00 N 523,00 E colourring read Hans van Muiswinkel
03-03-2023 Almere (De Vaart), Flevoland, NL 5.224,00 N 514,00 E colourring read Thijs Horst
05-03-2023 Almere (De Vaart), Flevoland, NL 5.224,00 N 514,00 E colourring read Eric Roeland
12-03-2023 Almere (De Vaart), Flevoland, NL 5.224,00 N 514,00 E colourring read Eric Roeland
24-03-2023 Almere (De Vaart), Flevoland, NL 5.224,00 N 514,00 E colourring read Eric Roeland
01-04-2023 Almere (De Vaart), Flevoland, NL 5.224,00 N 514,00 E colourring read Jan Zorgdrager
02-04-2023 Almere (De Vaart), Flevoland, NL 5.224,00 N 514,00 E colourring read Eric Roeland
08-04-2023 Almere (De Vaart), Flevoland, NL 5.224,00 N 514,00 E colourring read Eric Roeland
09-04-2023 Almere (De Vaart), Flevoland, NL 5.224,00 N 514,00 E colourring read Eric Roeland
16-04-2023 Almere (De Vaart), Flevoland, NL 5.224,00 N 514,00 E colourring read Eric Roeland
22-04-2023 IJsselmeer (De Kreupel), Noord-Holland, NL 5.247,00 N 513,00 E colourring read Leon Kelder
28-04-2023 Almere (De Vaart), Flevoland, NL 5.224,00 N 514,00 E colourring read Eric Roeland
29-04-2023 Almere (De Vaart), Flevoland, NL 5.224,00 N 514,00 E colourring read Eric Roeland
30-04-2023 Almere (De Vaart), Flevoland, NL 5.224,00 N 514,00 E colourring read Eric Roeland
21-06-2023 Onderdijk (Vooroever), Noord-Holland, NL 5.244,00 N 508,00 E colourring read Jeroen van Assema
30-07-2023 Onderdijk (Vooroever), Noord-Holland, NL 5.244,00 N 508,00 E colourring read Jeroen van Assema
05-01-2024 Almere (De Vaart), Flevoland, NL 5.224,00 N 514,00 E colourring read Eric Roeland
15-02-2024 Almere (De Vaart), Flevoland, NL 5.224,00 N 514,00 E colourring read Thijs Horst
16-02-2024 Almere (De Vaart), Flevoland, NL 5.224,00 N 514,00 E colourring read Eric Roeland
18-02-2024 Almere (De Vaart), Flevoland, NL 5.224,00 N 514,00 E colourring read Eric Roeland
03-04-2024 Wervershoof (Vooroever), Noord-Holland, NL 5.245,00 N 507,00 E colourring read Leon Kelder
30-05-2024 IJsselmeer (De Kreupel), Noord-Holland, NL 5.247,00 N 513,00 E colourring read Leon Kelder
08-07-2024 IJsselmeer (De Kreupel), Noord-Holland, NL 5.247,00 N 513,00 E colourring read Leon Kelder
16-07-2024 IJsselmeer (De Kreupel), Noord-Holland, NL 5.247,00 N 513,00 E colourring read Leon Kelder
19-07-2024 IJsselmeer (De Kreupel), Noord-Holland, NL 5.247,00 N 513,00 E colourring read T. Horst & M. Muusse
05-08-2024 IJsselmeer (De Kreupel), Noord-Holland, NL 5.247,00 N 513,00 E colourring read T. Horst, M. Muusse & T. Muusse
04-10-2024 Almere (Dashorstdijk), Flevoland, NL 5.225,00 N 512,00 E colourring read Thijs Horst
23-12-2024 Almere (De Vaart), Flevoland, NL 5.224,00 N 514,00 E colourring read Thijs Horst
31-12-2024 Almere (De Vaart), Flevoland, NL 5.224,00 N 514,00 E colourring read Thijs Horst
03-01-2025 Almere (De Vaart), Flevoland, NL 5.224,00 N 514,00 E colourring read T. Horst & M. Muusse
08-04-2025 IJsselmeer (De Kreupel), Noord-Holland, NL 5.247,00 N 513,00 E colourring read T. Horst & M. Muusse

**below: Herring Gull argenteus B.N 5CY, April 08 2025, colony De Kreupel, the Netherlands. Picture: Thijs Horst & Mars Muusse.**

**below: Herring Gull argenteus B.N 5**CY, January 03 2025, Almere - De Vaart, the Netherlands. Picture: Thijs Horst.

**below: Herring Gull argenteus B.N 4CY,** December 23 2024, Almere - De Vaart, the Netherlands. Picture: Thijs Horst.

**below: Herring Gull argenteus B.N 4CY, August 05 2024, colony De Kreupel, the Netherlands. Picture: Thijs Horst.**

**below: Herring Gull argenteus B.N 4CY, February 15 2024**, Almere, the Netherlands. Picture: Thijs Horst.

**below: Herring Gull argenteus B.N 3CY, March 03 2023, Almere, the Netherlands. Picture: Mars Muusse.**

**below: Herring Gull argenteus B.N 3CY, February 20 2023, Almere, the Netherlands.** Picture: Mars Muusse.

**below: Herring Gull argenteus B.N 2CY, October 07 2022, Almere, the Netherlands. Picture: Eric Roeland.**

Plumage pattern indicate Herring Gull, bill shape slightly better for Caspian Gull.

**below: Herring Gull argenteus B.N 2CY, February 03 2022, Bunschoten-Spakenburg, the Netherlands. Picture: Hans van Muiswinkel.**

Bill rather straight in this image, like Caspian. Still very streaked head by February like Herring Gull.

**below: Herring Gull argenteus B.N 2CY, January 17 2022, Almere, the Netherlands. Picture: Mars Muusse.**

Note:
- compact jizz, short winged,
- tibia have sort impression,
- notched fringes at tertials,
- rounded head, although bill maybe better for Caspian Gull,
- greater coverts with deep notched pattern, also in outer feathers, and lacking bold white tips,
- scapular pattern.

**below: Herring Gull argenteus B.N 1CY, December 24 2021, Almere, the Netherlands. Picture: Thijs Horst.**

**below: Herring Gull argenteus B.N 1CY, November 11 2021, Almere, the Netherlands. Picture: Thijs Horst.**

Note:
- compact jizz, short winged,
- tibia have short impression,
- fringes at tertials only slightly notched, not unlike seen in hybrid Caspian x Herring,
- angular and streaked head, although bill maybe better for Caspian Gull, but obvious gonys angle in image below very Herring like,
- greater coverts with deep notched pattern, also in outer feathers, and lacking bold white tips,
- scapular pattern showing bold anchors.

Larus cachinnans in the Netherlands

Herring Gull argenteus B.N 1CY-5CY, 2021-2025, the Netherlands. Picture: Thijs Horst, Mars Muusse, Eric Roeland & Hans van Muiswinkel.

below: Herring Gull argenteus B.N 5CY, April 08 2025, colony De Kreupel, the Netherlands. Picture: Thijs Horst & Mars Muusse.

below: Herring Gull argenteus B.N 5CY, January 03 2025, Almere - De Vaart, the Netherlands. Picture: Thijs Horst.

below: Herring Gull argenteus B.N 4CY, December 23 2024, Almere - De Vaart, the Netherlands. Picture: Thijs Horst.

below: Herring Gull argenteus B.N 4CY, August 05 2024, colony De Kreupel, the Netherlands. Picture: Thijs Horst.

below: Herring Gull argenteus B.N 4CY, February 15 2024, Almere, the Netherlands. Picture: Thijs Horst.

below: Herring Gull argenteus B.N 3CY, March 03 2023, Almere, the Netherlands. Picture: Mars Muusse.

below: Herring Gull argenteus B.N 3CY, February 20 2023, Almere, the Netherlands. Picture: Mars Muusse.

below: Herring Gull argenteus B.N 2CY, October 07 2022, Almere, the Netherlands. Picture: Eric Roeland.

below: Herring Gull argenteus B.N 2CY, February 03 2022, Bunschoten-Spakenburg, the Netherlands. Picture: Hans van Muiswinkel.

below: Herring Gull argenteus B.N 2CY, January 17 2022, Almere, the Netherlands. Picture: Mars Muusse.

below: Herring Gull argenteus B.N 1CY, December 24 2021, Almere, the Netherlands. Picture: Thijs Horst.

below: Herring Gull argenteus B.N 1CY, November 11 2021, Almere, the Netherlands. Picture: Thijs Horst.

below: Herring Gull argenteus B.N 1CY, November 05 2021, Almere, the Netherlands. Picture: Thijs Horst.