Larus cachinnans in the Netherlands
(last update: August 16, 2020)
Caspian Gull cachinnans M|1 adult, 2025, the Netherlands. Picture: Folko van den Brink, 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-M|1 and metal NLA 5.641.002, ringed as breeding adult Larus cachinnans on April 23 2025 at Lelystad, the Netherlands. Ringed by Roland-Jan Buijs ringing team (Mars Muusse / Thijs Horst / Fred Cottaar).
Recoveries:
25-04-2025 Lelystad (Bataviahaven), Flevoland, NL 5.230,00 N 525,00 E colourring read T. Horst & M. Muusse
08-05-2025 Lelystad (Bataviahaven), Flevoland, NL 5.230,00 N 525,00 E colourring read Thijs Horst
25-06-2025 Lelystad (Bataviahaven), Flevoland, NL 5.230,00 N 525,00 E colourring read Thijs Horst
30-06-2025 Lelystad (Bataviahaven), Flevoland, NL 5.230,00 N 525,00 E colourring read Thijs Horst
09-07-2025 Lelystad (Bataviahaven), Flevoland, NL 5.230,00 N 525,00 E colourring read T. Horst & M. Muusse
06-09-2025 Lelystad (Oostvaardersplassen), Flevoland, NL 5.227,00 N 524,00 E colourring read Maarten Hotting
26-11-2025 Lelystad (Oostvaardersdijk), Flevoland, NL 5.228,00 N 519,00 E colourring read Folko van den Brink
Visits and data 2025, 'vuilnisbakkie' (252) g-M|1.
| 2025 | parent 1 | parent 2 | A_length | A_width | A_volume | B_length | B_width | B_volume | C_length | C_width | C_volume | TOTAL NEST:
|
# eggs | |
| g-M|1 (252) | cach | cach | 73,7 | 49 | 73,4 | 48,6 | 73 | 49,8 | 3 | |||||
| dam: | dam 2 west
|
|||||||||||||
| location: | Vuilnisbakkie (nest 252), was nest g-A|D in 2024, but g-A|D not seen in 2025
|
|||||||||||||
| ouders: | new female cachinnans, not g-A|D. Trapped this year, now g-M|1. Male is same as 2024, unringed.
|
|||||||||||||
| ringed: | ||||||||||||||
| date | darvic | metal | location / nest# | species | sexe | age | wing | mass | head+ bill | bill | tarsus | gonys | greyscale | |
| 23-04-2025 | g-M|1 | 5641002 | nest Vuilinisbakkie | cach | F | >4CY | 454 | 887 | 124 | 54,8 | 68,4 | 17,4 | 6 | |
| 13-05-2025 | g-T|V | 5641094 | 252 | PONT | pullus | 302 | ||||||||
| 09-06-2025 | g-T|V | 5641094
|
PONT | pullus | 673 | CONTROL | ||||||||
OBSERVATIONS:
|
||||||||||||||
| 01-04-2025 | nest | cach breeding, Not g-A|D, but unringed female
|
||||||||||||
| 12-04 | nest | flying adult
|
||||||||||||
| 21-04 | nest | Now several spoonbills surrounding this nest
|
||||||||||||
| 21-04 | adult | 2x caspian gulls at nest, 1 is incubating. Attempt to trap a breeding bird, failed.
|
||||||||||||
| 23-04 | eggs | 3 eggs | ||||||||||||
| 23-04 | adult | trapped female, now g-M|1, incubating 3 eggs at nest Vuilnisbakkie
|
||||||||||||
| 01-05 | chicks | 2x wet chicks, 1x egg
|
||||||||||||
| 08-05-2025 | adult | both partners present and 1 chick
|
||||||||||||
| 13-05-2025 | chicks | 1 chick ringed, 2 chicks dead stuck between rocks.
|
||||||||||||
| 09-06-2025 | chicks | g-T|V found and measured. This chick fledged.
|
||||||||||||
below: Caspian Gull cachinnans M|1 adult, November 26 2025, Lelystad, the Netherlands. Picture: Folko van den Brink.
below: Caspian Gull cachinnans M|1 adult, June 25 2025, colony Lelystad, the Netherlands. Picture: Thijs Horst.
.JPG)
below: Caspian Gull cachinnans M|1 adult, May 08 2025, colony Lelystad, the Netherlands. Picture: Thijs Horst & Mars Muusse.
below: Caspian Gull cachinnans M|1 adult, April 25 2025, colony Lelystad, the Netherlands. Picture: Thijs Horst & Mars Muusse.
.JPG)
below: Caspian Gull cachinnans M|1 adult, April 23 2025, colony Lelystad, the Netherlands. Picture: Thijs Horst & Mars Muusse.
| date | darvic | metal | nest | species | sexe | age | wing | mass | head+ bill | bill | tarsus | gonys | barcode | greyscale | comments |
| 23-4-2025 | G-M|1 | .5641002 | Vuilinisbak | PONT | F | >4CY | 454 | 887 | 124 | 54,8 | 68,4 | 17,4 | 25B00544 / ACA25-9178 | 6 | Trapped by ringer. Breeder on 3 eggs. |
