Coordinator:
Albert de Jong
Merijn Loeve
Roland-Jan Buijs
Thijs Horst
Leon Kelder
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 2.7 4CY, 2025, Germany & the Netherlands. Picture: Björn Stranz, 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 R-27 and metal NLA 5.623.560, ringed as pullus Larus cachinnans on May 20 2022 at IJsselmeer (De Kreupel), Holland (5247.00 N 513.00 E). Ringer: Leon Kelder.
Recoveries:
17-08-2022 Renesse (Verklikkerplaat), Zeeland, NL 5.144,00 N 343,00 E colourring read Maarten Sluijter
08-04-2025 IJsselmeer (De Kreupel), Noord-Holland, NL 5.247,00 N 513,00 E colourring read T. Horst & M. Muusse
28-06-2025 IJsselmeer (De Kreupel), Noord-Holland, NL 5.247,00 N 513,00 E colourring read Leon Kelder
30-06-2025 IJsselmeer (De Kreupel), Noord-Holland, NL 5.247,00 N 513,00 E colourring read Leon Kelder
13-07-2025 IJsselmeer (De Kreupel), Noord-Holland, NL 5.247,00 N 513,00 E colourring read T. Horst, M. Muusse & N. Colpaert
15-10-2025 Sankt-Peter-Ording, Schleswig-Holstein, DUITSLAND 5.419,00 N 835,00 E colourring read Björn Stranz
Data for this nest
Bird from De Kreupel, nest M10 on island M.
| Date: |
Egg code |
Height (mm) |
Width (mm) |
Comments |
Metal NLA |
Colour ring |
Wing (mm) |
Head+ bill (mm) |
Bill (mm) |
Mass (gr) |
|
|
|
|
|
|
|
|
|
|
|
| 29-4-2022 |
|
|
|
3 eggs |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| 13-5-2022 |
|
|
|
3 eggs |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| 20-5-2022 |
|
|
|
3 pulli in nest |
5623560 |
Red 2.7 |
|
61.0 |
|
160 |
|
|
|
|
pellet = spike perch 10 cm |
5623561 |
Red 2.8 |
|
57.1 |
|
121 |
|
|
|
|
|
5623562 |
Red 2.9 |
|
65.5 |
|
225 |
below: Caspian Gull cachinnans 2.7 4CY, October 15 2025, Sankt-Peter-Ording, Germany. Picture: Björn Stranz.

below: Caspian Gull cachinnans 2.7 4CY, July 13 2025, colony De Kreupel, the Netherlands. Picture: Thijs Horst & Mars Muusse.
.JPG)

below: Caspian Gull cachinnans 2.7 4CY, April 08 2025, colony De Kreupel, the Netherlands. Picture: Thijs Horst & Mars Muusse.

|