Larus cachinnans in the Netherlands
(last update: August 16, 2020)
Caspian Gull cachinnans T|+ 1CY, May 25 2025, colony Lelystad, the Netherlands.
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Tibia G-T|+ and metal NLA 5.641.859, ringed as pullus Larus cachinnans on May 25 2025 at Lelystad, the Netherlands. Ringed by Roland-Jan Buijs ringing team (Mars Muusse / Thijs Horst / Fred Cottaar).
Mother: adult Caspian Gull g-B|+.
Father: 6CY Caspian Gull n-F|+.
Nest: nF|+ - gB|+ 2025.
In 2025: g-T|+ fledged. Fledging rate for this nest 2025 = 1,0.
Recoveries:
06-09-2025 Lelystad (Oostvaardersplassen), Flevoland, NL 5.227,00 N 524,00 E colourring read Maarten Hotting
Visits and data 2025.
| NEST code | 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 | |
| n-F|+ & g-B|+ | cach | cach | 75,2 | 50,2 | 73,6 | 50,4 | 71,8 | 49,2 | 3 | |||||
| dam: | dam 1 nest 60 cluster
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| location: | was nest 63, nest PAM0-2024, now n-F|+ in 2025
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| parents: | new: n-F|+ moved a few meters, up dam 2 towards Blackberry complex,
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| ringed: | darvic | metal | location / nest# | species | sexe | age | wing | mass | head+ bill | bill | tarsus | gonys | greyscale | |
| 23-04-2025 | n-F|+ | 5,552,921 | Nest n-F|+ | cach | M | 6CY | 465 | 1144 | 137,3 | 67,7 | 72,3 | 19,7 | 6 | |
| 01-05-2025 | g-B|+ | 5641025 | Nest n-F|+ | PONT | F | >4CY | 446 | 880 | 127 | 56,9 | 71,1 | 17,8 | 6 | |
| 25-05-2025 | g-T|+ | 5641859 | n-F|+ & g-B|+ | PONT | pullus | 380 | ||||||||
| 31-05-2025 | g-R|+ | 5641922 | n-F|+ & g-B|+ | PONT | pullus | 437 | FOUND DEAD, RING NOT REUSED | |||||||
OBSERVATIONS:
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| 20-03-2025 | nest | n-F|+ again near nest 60 cluster
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| 04-04 | nest | n-F|+ again near nest 60 cluster
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| 21-04 | eggs | 3x eggs measured,
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| nest | old PAM0 nest is now for n-F|+,
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| 23-04 | adult | CONTROL: trapped male n-F|+, incubating 3 eggs, We aimed for the partner,
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| 28-04 | nest | 3 eggs, n-F|+ incubating
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| 01-05 | eggs | 3 eggs | ||||||||||||
| adult | Thijs's Chinaloop for trapping female, 2 times, 1x successful,
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| 08-05 | adult | F|+ present
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| 25-05 | NEST | 1 chick ringed, 1 rotten egg, 3rd chick?
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| Food | 2x roach, 2x duckling
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| 31-05 | chicks | g-R|+ ringed, not 100% sure if it belongs to this nest,
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| 09-06 | chicks | g-R|+ found dead
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below: Caspian Gull cachinnans T|+ 1CY, May 25 2025, colony Lelystad, the Netherlands. Picture: Thijs Horst & Mars Muusse.
| date | darvic | metal | nest | species | sexe | age | wing | mass | head+ bill | bill | gonys | barcode | comments |
| 25-5-2025 | G-T|+ | .5641859 | n-F|+ & g-B|+ | PONT | pullus | 380 | Ringed pullus |
