Coordinators:
Albert de Jong
Leon Kelder
Roland-Jan Buijs
Thijs Horst
Merijn Loeve
Mars Muusse
Home
Project Info
International trend
National trend
Site characteristics
Breeding biology
Fecundity
Food resources
Nonbreeding season
Breeding species
Hybrid scores
Ring codes
Future |
Caspian Gull cachinnans T|2 1CY-2CY, 2025 - 2026, the Netherlands & England. Picture: James Robson, Thijs Horst & Mars Muusse.
| You can participate in this project too!
Please send in your observations of colour ringed birds to: ring@buijsecoconsult.nl |
Tibia G-T|2 and metal NLA 5.641.856, ringed as 1CY female Larus cachinnans on July 29 2025 at Velsen (Strand Noordpier), Holland (5228.00 N 433.00 E).
Ringed by Roland-Jan Buijs ringing team (Mars Muusse / Thijs Horst / Fred Cottaar).
Ring was used before, in colony Lelystad for nest 092, but chick found dead in colony. Now ring used again at the beach.
Recoveries:
01-01-2026 Coxwold (Newburgh Priory), North Yorkshire, ENGELAND 5.411,00 N 110,19 W colourring read James Robson
02-01-2026 Coxwold (Newburgh Priory), North Yorkshire, ENGELAND 5.411,00 N 110,19 W colourring read James Robson
Ringing details:
| Metal: |
Plastic: |
Date: |
Sex: |
Age: |
Wing: |
Loc: |
| .5641856 |
G-T|2 |
29-7-2025 |
F |
1CY |
413 |
Strand Noordpier, IJmuiden |
below: Caspian Gull cachinnans T|2 2CY, January 02 2026, Coxwold - North Yorkshire, England. Picture: James Robson.

below: Caspian Gull cachinnans T|2 1CY, July 29 2025, IJmuiden, the Netherlands. Picture: Thijs Horst & Mars Muusse.


|