Coordinators:
Albert de Jong
Leon Kelder
Roland-Jan Buijs
Thijs Horst
Merijn Loeve
Mars Muusse
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Caspian Gull cachinnans R|L 1CY, 2025, colony Lelystad, the Netherlands. Picture: Thijs Horst.
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Tibia G-R|L and metal NLA 5.641.902, ringed as pullus Larus cachinnans on May 31 2025 at Lelystad, the Netherlands. Ringed by Roland-Jan Buijs ringing team (Mars Muusse / Thijs Horst / Fred Cottaar).
Mother: adult Caspian Gull.
Father: 6CY Caspian Gull n-F|8.
Nest: nF|8-2025.
In 2025: g-R|L & g-R|M fledged. Fledging rate for this nest 2025 = 2,0.
Recoveries:
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
11-07-2025 Lelystad (Bataviahaven), Flevoland, NL 5.230,00 N 525,00 E colourring read Thijs Horst
Visits and data 2025.
| 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 |
| n-F|8 |
cach |
cach |
72,4 |
51,6 |
|
72,1 |
50,7 |
|
71 |
52,1 |
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3 |
| dam: |
dam 2 central, N-side |
| location: |
is n-F|8 - 2023-2024, orange crate
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| parents: |
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| ringed: |
darvic |
metal |
location / nest# |
species |
sexe |
age |
wing |
mass |
head+ bill |
bill |
tarsus |
gonys |
greyscale |
|
| 31-05-2025 |
g-R|L |
5641902 |
n-F|8 |
PONT |
|
pullus |
|
818 |
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| 31-05-2025 |
g-R|M |
5641903 |
n-F|8 |
PONT |
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pullus |
|
772 |
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| 09-06-2025 |
G-R|L |
5641902 |
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PONT |
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pullus |
|
905 |
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CONTROL |
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| 16-03-2025 |
nest |
n-F|8 & partner near orange crate, location 2023-2024, North side dam 2, near nest 17,
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| 21-04 |
eggs |
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| 08-05 |
adult |
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| 31-05 |
chicks |
2x chicks ringed, 1 egg unfertile
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food |
mutiple fishes in nest, and feeding stone full of fish scraps,
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| 09-06 |
chicks |
g-R|L caught and measured
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below: Caspian Gull cachinnans R|L 1CY, July 11 2025, colony Lelystad, the Netherlands. Picture: Thijs Horst.
.JPG)

below: Caspian Gull cachinnans R|L 1CY, July 09 2025, colony Lelystad, the Netherlands. Picture: Thijs Horst.
.JPG)

below: Caspian Gull cachinnans R|L 1CY, June 30 2025, colony Lelystad, the Netherlands. Picture: Thijs Horst.

below: Caspian Gull cachinnans R|L 1CY, June 09 2025, colony Lelystad, the Netherlands. Picture: Thijs Horst.

below: Caspian Gull cachinnans R|L 1CY, May 31 2025, colony Lelystad, the Netherlands. Picture: Thijs Horst.
| date |
darvic |
metal |
nest |
species |
sexe |
age |
wing |
mass |
head+ bill |
bill |
gonys |
barcode |
comments |
| 31-05-2025 |
G-R|L |
.5641902 |
n-F|8 |
PONT |
|
pullus |
|
818 |
|
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Ringed pullus |
| 09-06-2025 |
G-R|L |
.5641902 |
|
PONT |
|
pullus |
|
905 |
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