Larus cachinnans in the Netherlands
(last update: August 16, 2020)
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 | 3 | |||||
| dam: | dam 2 central, N-side | |||||||||||||
| location: | is n-F|8 - 2023-2024, orange crate
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| parents: | same as 2024
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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 | Ringed pullus
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| 31-05-2025 | g-R|M | 5641903 | n-F|8 | PONT | pullus | 772 | Ringed pullus
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| 09-06-2025 | G-R|L | 5641902 | PONT | pullus | 905 | CONTROL | ||||||||
OBSERVATIONS:
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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 | 3x eggs measured,
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| 08-05 | adult | unringed partner present
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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.
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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 | Ringed pullus | ||||||
| 09-06-2025 | G-R|L | .5641902 | PONT | pullus | 905 |
