Larus cachinnans in the Netherlands
(last update: August 16, 2020)
Caspian Gull cachinnans T|J 1CY, 2025, colony Lelystad, the Netherlands. Picture: Thijs Horst.
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Tibia G-T|J and metal NLA 5.641.070, ringed as pullus Larus cachinnans on May 13 2025 at Lelystad, the Netherlands. Ringed by Roland-Jan Buijs ringing team (Mars Muusse / Thijs Horst / Fred Cottaar).
Mother: 8CY Caspian Gull y-P:U60.
Father: adult Caspian Gull.
In 2025: only g-T|J survived for nest P:U60. Fledging rate for rthis nest 2025 = 1,0.
Recoveries:
25-06-2025 Lelystad (Bataviahaven), Flevoland, NL 5.230,00 N 525,00 E colourring read Thijs Horst
29-06-2025 Lelystad (Bataviahaven), Flevoland, NL 5.230,00 N 525,00 E colourring read T. Horst & M. Muusse
09-07-2025 Lelystad (Bataviahaven), Flevoland, NL 5.230,00 N 525,00 E colourring read T. Horst & M. Muusse
Data for this nest in 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:U60 | cach | cach | 76 | 51,8 | 102,68 | 74,9 | 52 | 101,97 | 73,70 | 50,6 | 95,01 | 299,66 | 3 | |
| dam: | dam 1 blocks
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| location: | In 2025: 2 mtr E of old PU60, Block sprayed red,
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| ouders: | same as 2024
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| ring pulli: | ||||||||||||||
| date | darvic | metal | location | species | sexe | age | wing | mass | head+ bill | bill | tarsus | gonys | greyscale | |
| 13/5-2025 | g-T|G | 5641068 | PU60 | PONT | pullus | 118 | FOUND DEAD, RING REUSED
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| 13/5-2025 | g-T|H | 5641069 | PU60 | PONT | pullus | 170 | FOUND DEAD, RING REUSED
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| 13/5-2025 | g-T|J | 5641070 | PU60 | PONT | pullus | 233 | ||||||||
OBSERVATIONS:
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| 3/16/2025 | nest | PU60 present, plus partner likely near nest,
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| 3/20/2025 | nest | PU60 present with unringed partner,
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| 3/21/2025 | wastedump | PU60 present in Almere, not seen feeding,
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| 3/25/2025 | nest | PU60 present with unringed partner,
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| 4/1/2025 | nest | PU60 present with unringed partner,
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| 4/4/2025 | nest | PU60 present with unringed partner,
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| 4/23/2025 | eggs | 3 eggs, measured,
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| 4/28/2025 | eggs | 3 eggs | ||||||||||||
| 1/5/2025 | eggs | 3 eggs, no cracks
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| adult | PU60 & partner,
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| 8-5-2025 | adult | both partners present
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| 13-5-2025 | chicks | 3x chicks ringed
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| 9-6-2025 | chicks | 2 chicks found dead, g-T|J still alive and measured
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below: Caspian Gull cachinnans T|J 1CY, July 09 2025, colony Lelystad, the Netherlands. Picture: Thijs Horst.
1st image: g-T|J & g-R|2.
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below: Caspian Gull cachinnans T|J 1CY, June 29 2025, colony Lelystad, the Netherlands. Picture: Thijs Horst.
Only chick in the nest g-T|J & mother y-P:U60.
below: Caspian Gull cachinnans T|J 1CY, June 25 2025, colony Lelystad, the Netherlands. Picture: Thijs Horst.
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below: Caspian Gull cachinnans T|J 1CY, June 09 2025, colony Lelystad, the Netherlands. Picture: Thijs Horst.
