Coordinators:
Albert de Jong
Leon Kelder
Roland-Jan Buijs
Thijs Horst
Merijn Loeve
Mars Muusse
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Caspian Gull cachinnans M|5 adult, 2025, colony Lelystad, the Netherlands. Picture: Thijs Horst & Mars Muuse.
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Please send in your observations of colour ringed birds to: ring@buijsecoconsult.nl |
Tibia G-M|5 and metal NLA 5.641.006, 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:
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
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
Visits and data 2025 nest g-M|5 & g-N|S (014).
| NEST code |
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|5 & g-N|S (14) |
cach |
cach |
72,2 |
48,7 |
|
70,1 |
49,7 |
|
68,8 |
48 |
|
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|
3 |
| dam: |
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| location: |
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| ouders: |
new, both Caspian Gulls trapped this season and ringed. |
| ringed: |
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| date |
darvic |
metal |
location / nest# |
species |
sexe |
age |
wing |
mass |
head+ bill |
bill |
tarsus |
gonys |
greyscale |
|
| 25-04-2025 |
g-M|5 |
5641006 |
14 |
PONT |
M |
>4CY |
459 |
1249 |
143,2 |
65,6 |
73,1 |
20,4 |
|
|
| 01-05-2025 |
g-N|S |
5641022 |
14 red rope |
PONT |
F |
>4CY |
440 |
906 |
122,1 |
77,7 |
65,7 |
17,4 |
6 |
|
| 13-05-2025 |
g-T|R |
5641090 |
14 red rope |
PONT |
|
pullus |
|
115 |
|
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|
| 13-05-2025 |
g-T|S |
5641091 |
14 red rope |
PONT |
|
pullus |
|
210 |
|
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| 23-04-2025 |
nest |
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| 25-04 |
adult |
male cachinnans trapped on nest, now g-M|5.
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| 01-05 |
adult |
female cachinnans trapped in nest, now g-N|S.
|
| 08-05 |
adult |
|
| 13-05 |
chicks |
2x chicks ringed, 3rd not found.
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food |
both chicks, vomit is fish bolus. Eventually, chicks not fledged. Failed season.
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below: Caspian Gull cachinnans M|5 adult, July 09 2025, colony Lelystad, the Netherlands. Picture: Thijs Horst.
G-M|5 & G-N|S.
.JPG)

.JPG)
below: Caspian Gull cachinnans M|5 adult, June 30 2025, colony Lelystad, the Netherlands. Picture: Thijs Horst.

below: Caspian Gull cachinnans M|5 adult, May 08 2025, colony Lelystad, the Netherlands. Picture: Thijs Horst & Mars Muuse.

.JPG)
below: Caspian Gull cachinnans M|5 adult, May 05 2025, colony Lelystad, the Netherlands. Picture: Thijs Horst & Mars Muuse.

below: Caspian Gull cachinnans M|5 adult, April 25 2025, colony Lelystad, the Netherlands. Picture: Thijs Horst & Mars Muuse.
Bird with 3rd mirror, on P8.

below: Caspian Gull cachinnans M|5 adult, April 23 2025, colony Lelystad, the Netherlands. Picture: Thijs Horst & Mars Muuse.
| date |
darvic |
metal |
nest |
species |
sexe |
age |
wing |
mass |
head+ bill |
bill |
tarsus |
gonys |
barcode |
greyscale |
comments |
| 25-4-2025 |
G-M|5 |
.5641006 |
14 |
PONT |
M |
>4CY |
459 |
1249 |
143,2 |
65,6 |
73,1 |
20,4 |
25B00546 |
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Trapped by ringer. Breeder on 3 eggs. |






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