Coordinators:
Albert de Jong
Leon Kelder
Roland-Jan Buijs
Thijs Horst
Merijn Loeve
Mars Muusse
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Caspian Gull cachinnans 0:T 1CY, August 11 2026, Aberdeen, UK. Picture: Bernard Siddle & Andrew Whitehouse.
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Tibia Y-0:T and metal 5.646.708, ringed as pullus Larus cachinnans on May 26 2026 in colony Lelystad, the Netherlands. Ringer: Roland-Jan Buijs ringing team.
This is a recycled ring combo, after chick nest g-A|G was found dead (see Y-0:T).
Recoveries:
19-05-2026 Lelystad (Bataviahaven), Flevoland, NL 5.230,00 N 525,00 E colourring read Thijs Horst
11-07-2026 Lelystad (Bataviahaven), Flevoland, NL 5.230,00 N 525,00 E colourring read T. Horst & M. Muusse
13-07-2026 Lelystad (Bataviahaven), Flevoland, NL 5.230,00 N 525,00 E colourring read Thijs Horst
11-08-2026 Aberdeen (South Pier), Aberdeenshire, SCHOTLAND 3.708,34 N 203,19 W colourring read Andrew Whitehouse
Visits and data for nest g-M|9 & g-N|U 2026.
| 2026 |
parent 1 |
parent 2 |
A_length |
A_width |
A_volume |
B_length |
B_width |
B_volume |
C_length |
C_width |
C_volume |
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# eggs |
| g-M|9 & g-N|U |
cach |
cach |
72 |
50,6 |
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68,8 |
49,4 |
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67,2 |
50,3 |
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3 |
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| date |
darvic |
metal |
location / nest# |
species |
sexe |
age |
wing |
mass |
head+ bill |
bill |
tarsus |
gonys |
greyscale |
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| 10-05-2026 |
Y-0:U |
.5646709 |
g-M|9 & g-N|U |
PONT |
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PULL |
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81 |
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| 10-05-2026 |
Y-0:V |
.5646710 |
g-M|9 & g-N|U |
PONT |
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PULL |
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121 |
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| 10-05-2026 |
Y-0:T |
.5646708 |
g-M|9 & g-N|U |
PONT |
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PULL |
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| 04-04-2026 |
nest |
3 eggs, measured. Nest now 40 mtr towards centre of dam 2 Split. |
| 27-04-2026 |
parents |
Both present. |
| 10-05-2026 |
pullus |
2x pullus ringed. 3rd chick not found. |
| 26-05-2026 |
pullus |
3rd pullus trapped at water, and ringed. Code is recycling from dead chick nest g-A|G (found dead on May 26 2026). Wet chick, not weighted. |
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pullus |
Y-0:U also trapped at water. |
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parents |
For several weeks now, it seems a 4CY Caspian Gull supports this nest: alarming and guarding at dam. Some cooperation??? |
Caspian Gull cachinnans 0:T 1CY, August 11 2026, South Pier - Aberdeen, UK. Picture: Andrew Whitehouse.


Caspian Gull cachinnans 0:T 1CY, August 11 2026, Torry Battery - Aberdeen, UK. Picture: Bernard Siddle.

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