Coordinator:
Albert de Jong
Merijn Loeve
Roland-Jan Buijs
Thijs Horst
Leon Kelder
Mars Muusse
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Caspian Gull cachinnans B.+ adult, 2023-2025, the Netherlands. Picture: Hans van Muiswinkel, Mars Muusse, Thijs Horst & Fred Visscher.
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Please send in your observations of colour ringed birds to: ring@buijsecoconsult.nl |
Tibia ring R-B+ and metal NLA 6.214.031, ringed as adult male Larus cachinnans on April 29 2022 at nest C3-2022 - De Kreupel, Holland (5247.00 N 513.00 E) - ringer Roland-Jan Buijs.
Recoveries:
16-06-2023 IJsselmeer (De Kreupel), Noord-Holland, NL 5.247,00 N 513,00 E colourring read Leon Kelder
17-06-2023 IJsselmeer (De Kreupel), Noord-Holland, NL 5.247,00 N 513,00 E colourring read Leon Kelder
21-06-2023 IJsselmeer (De Kreupel), Noord-Holland, NL 5.247,00 N 513,00 E colourring read Leon Kelder
24-06-2023 IJsselmeer (De Kreupel), Noord-Holland, NL 5.247,00 N 513,00 E colourring read Leon Kelder
02-07-2023 IJsselmeer (De Kreupel), Noord-Holland, NL 5.247,00 N 513,00 E colourring read Leon Kelder
03-07-2023 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 colourring read Leon Kelder
08-07-2023 IJsselmeer (De Kreupel), Noord-Holland, NL 5.247,00 N 513,00 E colourring read Leon Kelder
09-07-2023 IJsselmeer (De Kreupel), Noord-Holland, NL 5.247,00 N 513,00 E colourring read Leon Kelder
14-07-2023 IJsselmeer (De Kreupel), Noord-Holland, NL 5.247,00 N 513,00 E colourring read Leon Kelder
16-08-2023 Veluwemeer, Flevoland, NL 5.223,00 N 539,00 E colourring read Hans van Muiswinkel
07-03-2024 Medemblik (Medemblikkersluisweg), Noord-Holland, NL 5.246,00 N 504,00 E colourring read Fred Visscher
13-04-2024 IJsselmeer (De Kreupel), Noord-Holland, NL 5.247,00 N 513,00 E colourring read Leon Kelder
30-06-2024 IJsselmeer (De Kreupel), Noord-Holland, NL 5.247,00 N 513,00 E colourring read Leon Kelder
05-08-2024 IJsselmeer (De Kreupel), Noord-Holland, NL 5.247,00 N 513,00 E colourring read T. Horst, M. Muusse & T. Muusse
15-01-2025 Almere (De Vaart), Flevoland, NL 5.224,00 N 514,00 E colourring read Thijs Horst
08-04-2025 IJsselmeer (De Kreupel), Noord-Holland, NL 5.247,00 N 513,00 E colourring read T. Horst & M. Muusse
Data for this nest
Bird from De Kreupel, nest C3 on island C. Parent is r-B+.
Date: |
Egg code |
Height (mm) |
Width (mm) |
Comments |
Metal NLA |
Colour ring |
Wing (mm) |
Head+ bill (mm) |
Bill (mm) |
Mass (gr) |
Tarsus |
Gonys |
swab no |
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29-4-2022 |
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trapped adult Caspian Gull |
6214031 |
Red B+ |
477 |
132.2 |
60.2 |
1020 |
78.0 |
22.2 |
1062 |
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13-5-2022 |
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3 eggs |
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20-5-2022 |
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2 pulli & 1 egg in nest |
5623587 |
Red 3.0 |
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51.1 |
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79 |
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5623588 |
Red 3.1 |
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54.6 |
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106 |
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26-5-2022 |
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2 pulli & 1 egg |
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15-7-2022 |
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carcass of bird with r-3.0 at island C |
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Red 3.0 |
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below: Caspian Gull cachinnans B.+ adult, April 08 2025, colony De Kreupel, the Netherlands. Picture: Thijs Horst & Mars Muusse.

below: Caspian Gull cachinnans B.+ adult, August 05 2024, colony De Kreupel, the Netherlands. Picture: Thijs Horst.

below: Caspian Gull cachinnans B.+ adult, April 12-16 2024, colony De Kreupel, the Netherlands. Picture: Leon Kelder - camera trap.
Nest Q11, with male r-B+ and unringed partner.








below: Caspian Gull cachinnans B.+ adult, March 07 2024, Medemblik, the Netherlands. Picture: Fred Visscher.

below: Caspian Gull cachinnans B.+ adult, August 16 2023, Veluwemeer - Flevoland, the Netherlands. Picture: Hans van Muiswinkel.

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