Larus cachinnans in the Netherlands
(last update: August 16, 2020)
Caspian Gull cachinnans hybrid C:U 1CY, 2025, the Netherlands. Picture: Hans van Muiswinkel, Thijs Horst & Mars Muusse.
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Tibia Y-C:U and metal 5.633.765, ringed as pullus F1-hybrid Larus argentatus x L. cachinnans on May 16 2025 at IJsselmeer (De Kreupel), Noord-Holland, by ringer Leon Kelder.
Recoveries:
13-07-2025 IJsselmeer (De Kreupel), Noord-Holland, NL 5.247,00 N 513,00 E colourring read T. Horst, M. Muusse & N. Colpaert
18-07-2025 IJsselmeer (De Kreupel), Noord-Holland, NL 5.247,00 N 513,00 E colourring read T. Horst & M. Muusse
26-07-2025 IJsselmeer (De Kreupel), Noord-Holland, NL 5.247,00 N 513,00 E colourring read Thijs Horst
19-09-2025 Wervershoof (Vooroever), Noord-Holland, NL 5.245,00 N 507,00 E colourring read Wim de Lange
05-10-2025 Sint Nicolaasga (Food Recycling), Friesland, NL 5.254,00 N 544,00 E colourring read Hans van Muiswinkel
Data for nest K1 - 2025.
| Metal ring | Colour ring | Date | Species | Age | Clutch size | Location | Nest code | Ringer | Head+Bill | Mass | Wing | Parents |
| NLA 5633764 | y-C:T | 16-5-2025 | Caspian Gull | pullus | 2 eggs | the Netherlands, De Kreupel - eiland K. | K1 | Leon Kelder | 68,1 | 226,0 | ||
| NLA 5633764 | y-C:T | 30-5-2025 | Caspian Gull | pullus | -- | the Netherlands, De Kreupel - eiland K. | K1 | Leon Kelder | ||||
| NLA 5633765 | y-C:U | 16-5-2025 | Caspian Gull | pullus | 2 eggs | the Netherlands, De Kreupel - eiland K. | K1 | Leon Kelder | 64,4 | 195,0 | ||
below: Caspian Gull cachinnans hybrid C:U 1CY, October 05 2025, Spakenburg, the Netherlands. Picture: Hans van Muiswinkel.
below: Caspian Gull cachinnans hybrid C:U 1CY, July 13 2025, colony De Kreupel, the Netherlands. Picture: Thijs Horst & Mars Muusse.
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