Coordinators:
Albert de Jong
Leon Kelder
Roland-Jan Buijs
Thijs Horst
Merijn Loeve
Mars Muusse
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Caspian Gull cachinnans C|0 1CY, June 29 2025, colony Lelystad, the Netherlands. Picture: Thijs Horst & Mars Muusse.
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Tibia G-C|0 and metal NLA 5.641.923, 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: 5CY Caspian Gull g-N|P.
Father: 4CY Caspian Gull r-CU.
Nest: gN|P rCU 2025.
In 2025: g-C|0 fledged. Fledging rate for this nest 2025 = 1,0.
Recoveries:
29-06-2025 Lelystad (Bataviahaven), Flevoland, NL 5.230,00 N 525,00 E colourring read T. Horst & M. Muusse
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
Data for nest r-CU & g-N|P (272).
| 2025 |
parent 1 |
parent 2 |
A_length |
A_width |
A_volume |
B_length |
B_width |
B_volume |
C_length |
C_width |
C_volume |
|
|
# eggs |
r-CU & g-N|P
(272 Yellow Rope) |
cach |
cach |
69 |
48,5 |
|
66,1 |
46,1 |
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2 |
| dam: |
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| location: |
Between Blue Rope and nest 14
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| parents: |
new, r-CU is pullus 2022 of nest 14
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| ringed: |
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| date |
darvic |
metal |
location / nest# |
species |
sexe |
age |
wing |
mass |
head+ bill |
bill |
tarsus |
gonys |
greyscale |
|
| 01-05-2025 |
g-N|P |
5641021 |
r-CU & g-N|P |
PONT |
F |
5CY |
431 |
938 |
126 |
57,3 |
69,1 |
17,8 |
7,5 |
|
| 31-05-2025 |
g-C|0 |
5641923 |
r-CU & g-N|P |
PONT |
|
pullus |
|
348 |
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| 16-03-2025 |
adult |
r-CU present, is 2022 chick from nest 14 (which is only 10 meters away!
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| 01-04 |
adult |
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| 12-04 |
adult |
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| 23-04 |
eggs |
|
|
adult |
unringed female cachinnans
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| 01-05 |
adult |
trapped female cachinnans 5CY, now g-N|P.
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eggs |
2x eggs |
| 08-05 |
adult |
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| 13-05 |
nest |
2x eggs |
| 31-05 |
nest |
1 chick ringed, other one not found
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Tibia ring G-C|0 is a re-use from 2024 when ringed as pullus Larus cachinnans on May 31 2024 in nest y-P:AM0 g-A|E-2024 at Lelystad. Bird was found dead on June 18 2024 in colony Lelystad.
Caspian Gull cachinnans C|0 1CY, July 09 2025, colony Lelystad, the Netherlands. Picture: Mars Muusse.

Caspian Gull cachinnans C|0 1CY, June 29 2025, colony Lelystad, the Netherlands. Picture: Thijs Horst.

Caspian Gull cachinnans C|0 1CY, May 31 2025, colony Lelystad, the Netherlands. Picture: Thijs Horst & Mars Muusse.
| date |
darvic |
metal |
nest |
species |
sexe |
age |
wing |
mass |
head+ bill |
bill |
gonys |
barcode |
comments |
| 31-5-2025 |
G-C|0 |
.5641923 |
r-CU & g-N|P |
PONT |
|
pullus |
|
348 |
|
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Ringed pullus |

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