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 M|4 adult, 2025, the Netherlands. Picture: 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|4 and metal NLA 5.641.005, ringed as breeding adult Larus cachinnans on April 25 2025 at Lelystad, the Netherlands. Ringed by Roland-Jan Buijs ringing team (Mars Muusse / Thijs Horst / Fred Cottaar).
Recoveries:
01-05-2025 Lelystad (Bataviahaven), Flevoland, NL 5.230,00 N 525,00 E colourring read T. Horst & M. Muusse
05-05-2025 Lelystad (Bataviahaven), Flevoland, NL 5.230,00 N 525,00 E colourring read Thijs Horst
08-05-2025 Lelystad (Bataviahaven), Flevoland, NL 5.230,00 N 525,00 E colourring read Thijs Horst
13-06-2025 Lelystad (Bataviahaven), Flevoland, NL 5.230,00 N 525,00 E colourring read Thijs Horst
Visits and data 2025, Blue Rope (227) g-M|4.
| 2025 |
parent 1 |
parent 2 |
A_length |
A_width |
A_volume |
B_length |
B_width |
B_volume |
C_length |
C_width |
C_volume |
|
|
# eggs |
| g-M|4 (227) |
cach |
cach |
71 |
52 |
|
70,9 |
50,6 |
|
66,4 |
49,5 |
|
|
|
3 |
| dam: |
|
| location: |
nest Blue Rope (227), 12 mtr E of Vuilnisbakkie, dam 2
|
| parents: |
|
| ringed: |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| date |
darvic |
metal |
location / nest# |
species |
sexe |
age |
wing |
mass |
head+ bill |
bill |
tarsus |
gonys |
greyscale |
|
| 25-04-2025 |
g-M|4 |
5641005 |
227/blauwe touw |
PONT |
F |
>4CY |
455 |
935 |
122,5 |
52,4 |
68,3 |
18,3 |
|
|
| 13-05-2025 |
g-T|T |
5641091 |
227 |
PONT |
|
pullus |
|
105 |
|
|
|
|
|
|
| 13-05-2025 |
g-T|U |
5641091 |
227 |
PONT |
|
pullus |
|
81 |
|
|
|
|
|
|
| 09-06-2025 |
G-R|4 |
5641930 |
227/blauwe touw |
PONT |
|
pullus |
|
664 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| 23-04-2025 |
eggs |
|
|
nest |
Blue rope flat, between boulders, harder to see.
|
| 25-04 |
nest |
g-M|4 female cach trapped on nest, incubating 3 eggs. Now g-M|4.
|
| 01-05 |
chicks |
|
|
adult |
|
| 08-05 |
adult |
|
| 13-05 |
chicks |
2 chicks ringed, 1 egg hatching
|
| 09-06 |
chicks |
1 chick found and ringed. Eventually: g-R|4 fledged, while g-T|T & g-T|U not seen after ringing.
|
below: Caspian Gull cachinnans M|4 adult, May 08 2025, colony Lelystad, the Netherlands. Picture: Thijs Horst & Mars Muusse.

below: Caspian Gull cachinnans M|4 adult, April 25 2025, colony Lelystad, the Netherlands. Picture: Thijs Horst & Mars Muusse.

below: Caspian Gull cachinnans M|4 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 |
| 25-4-2025 |
G-M|4 |
.5641005 |
blauwe touw |
PONT |
F |
>4CY |
455 |
935 |
122,5 |
52,4 |
68,3 |
18,3 |
25B00545 |
|
Trapped by ringer. Breeder on 3 eggs. |






|