Larus cachinnans in the Netherlands

(last update: August 16, 2020)

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Caspian Gull cachinnans R|7 1CY, June 25 2025, colony Lelystad, the Netherlands.

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Tibia G-R|7 and metal NLA 5.641.970, ringed as pullus Larus cachinnans on June 25 2025 at Lelystad, the Netherlands. Ringed by Roland-Jan Buijs ringing team (Mars Muusse / Thijs Horst / Fred Cottaar).

Recoveries:
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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
g-A|H & g-T|9 cach cach 73,1 50,4 72,2 52,1 72,2 51,1 3
dam:
dam 1 east
location:
No longer nest 139, it moved 40 m W towards old nest g-A|A 2024, Only visible from N-side dam 1
parents:
same as 2023-2024. Caspian Gulls, male is g-A|H and female trapped this year, now g-T|9.
ringed:
date darvic metal location / nest# species sexe age wing mass head+ bill bill tarsus gonys greyscale
30-05-2025 g-T|9 5641858 139 PONT F >4CY 430 865 124,4 51,5 68,5 18,5 7
25-06-2025 G-R|7 5641970 G-A|H & G-T|9 PONT pullus 121
25-06-2025 G-R|8 5641971 G-A|H & G-T|9 PONT pullus 93
OBSERVATIONS:
16-03 nest
g-A|H & cach partner on blocks in front of nest, east dam 1, Also on bread
20-03 nest
g-A|H present around nest location 2024
21-03 nest
g-A|H present around nest location 2024
25-03 nest
g-A|H present around nest location 2024
23-04 nest
Nest close to g-A|A 2024, large black fender cushion placed in front of nest between stones
adult
g-A|H incubating
eggs
3 eggs, measured
28-04 nest
g-A|H incubating
30-05 nest
adult trapped, still 3 eggs
09-06-2025 nest 3 eggs
14-06-2025 nest 3 eggs
25-06-2025 chicks
2 chicks ringed, 1 rotten egg

Data for this nest in 2025:

date darvic metal nest species sexe age wing mass head+ bill bill gonys barcode comments
25-6-2025 G-R|7 .5641970 G-A|H & G-T|9 PONT pullus 121         ringed pullus