Larus cachinnans in the Netherlands
(last update: August 16, 2020)
Caspian Gull cachinnans M|3 adult, 2025, Lelystad & Almere, the Netherlands. Picture: Thijs Horst & Mars Muusse.
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Tibia G-M|3 and metal NLA 5.641.004, ringed as breeding adult Larus cachinnans on April 23 2025 at Lelystad, the Netherlands. Ringed by Roland-Jan Buijs ringing team (Mars Muusse / Thijs Horst / Fred Cottaar).
Recoveries:
25-04-2025 Lelystad (Bataviahaven), Flevoland, NL 5.230,00 N 525,00 E colourring read T. Horst & M. Muusse
04-06-2025 Almere (De Vaart), Flevoland, NL 5.224,00 N 514,00 E colourring read Thijs Horst
10-06-2025 Almere (De Vaart), Flevoland, NL 5.224,00 N 514,00 E colourring read Thijs Horst
13-06-2025 Lelystad (Bataviahaven), Flevoland, NL 5.230,00 N 525,00 E colourring read Thijs Horst
24-06-2025 Almere (De Vaart), Flevoland, NL 5.224,00 N 514,00 E colourring read Thijs Horst
30-06-2025 Lelystad (Bataviahaven), Flevoland, NL 5.230,00 N 525,00 E colourring read Thijs Horst
Data for nest P:AM0 & M|3 (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:
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# eggs | |
| P:AM0 & M|3 | cach | cach | 70,6 | 51,5 | 68,1 | 50,1 | 2 | |||||||
| dam: | dam 2, next to lighthouse
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| location: | New nest, 2 m W of g-A|C (orange football),
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| date | darvic | metal | location / nest# | species | sexe | age | wing | mass | head+ bill | bill | tarsus | gonys | greyscale | |
| 23-4-2025 | g-M|3 | 5641004 | Nest PAM0 | cach | F | >4CY | 421 | 929 | 122,8 | 53,2 | 65,4 | 16,8 | 6 | |
| 31-5-2025 | g-R|D | 5641895 | y-P:AM0 & g-M|3 | PONT | pullus | 426 | ||||||||
| 31-5-2025 | g-R|E | 5641896 | y-P:AM0 & g-M|3 | PONT | pullus | 465 | ||||||||
OBSERVATIONS:
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| 3/16/2025 | nest | PAM0 not present, female g-A|E present, slightly more to the west on dam 1,
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| 3/21/2025 | feeding | PAM0 on bread near poles dam 2, not seen at nest location, g-A|E not seen that day
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| 3/25/2025 | feeding | PAM0 present at Almere wastedump
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| 4/12/2025 | nest | PAM0 at location nest 203-2020, between Spoonbills,
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| 4/21/2025 | nest | 2 eggs, measured,
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| 4/23/2025 | nest | 2 eggs, | ||||||||||||
| adult | trapped female, now g-M|3, incubating 2 eggs at nest PAM0,
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| 4/28/2025 | nest | 2 eggs | ||||||||||||
| 1/5/2025 | nest | 2 eggs | ||||||||||||
| 8-5-2025 | adult | y-P:AM0 present
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| 13-5-2025 | nest | 1 wet chick, 1 hatching
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| 31-5-2025 | nest | 2 chicks ringed
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below: Caspian Gull cachinnans M|3 adult, June 30 2025, colony Lelystad, the Netherlands. Picture: Thijs Horst.
below: Caspian Gull cachinnans M|3 adult, June 29 2025, colony Lelystad, the Netherlands. Picture: Thijs Horst.
Chick g-R|D and g-M|3.
below: Caspian Gull cachinnans M|3 adult, June 10 2025, Almere - De Vaart, the Netherlands. Picture: Thijs Horst.
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below: Caspian Gull cachinnans M|3 adult, June 04 2025, Almere - De Vaart, the Netherlands. Picture: Thijs Horst.
below: Caspian Gull cachinnans M|3 adult, April 25 2025, colony Lelystad, the Netherlands. Picture: Thijs Horst & Mars Muusse.
below: Caspian Gull cachinnans M|3 adult, April 23 2025, colony Lelystad, the Netherlands. Picture: Thijs Horst & Mars Muusse.
| date | darvic | metal | nest | species | sexe | age | wing | mass | head+ bill | bill | tarsus | gonys | barcode | greyscale | comments |
| 23-4-2025 | G-M|3 | .5641004 | PAM0 | PONT | F | >4CY | 421 | 929 | 122,8 | 53,2 | 65,4 | 16,8 | ACA25-9180 | 6 | Trapped by ringer. Breeder on 2 eggs. |
