Larus cachinnans in the Netherlands
(last update: August 16, 2020)
Caspian Gull cachinnans T|0 1CY, 2025, colony Lelystad, the Netherlands. Picture: Thijs Horst & Mars Muusse.
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Tibia G-T|0 and metal NLA 5.641.854, 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-A|G.
Father: adult Caspian Gull.
Nest: g-A|G (038). In 2025, g-T|Z & g-T|0 fledged. Fledging rate for this nest 2025 = 2,0.
Recoveries:
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
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:
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# eggs |
| g-A|G (038) | cach | cach | 72,7 | 52,5 | 70 | 52 | 67,1 | 51,8 | 3 | ||||
| dam: | dam 2 east of T-split
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| location: | is 38-2023: 200 mtr E of T-split, on top of tarmac two large boulders, west one is lookout post,
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| parents: | same as 2022-2024, one is g-A|G
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| ringed: | |||||||||||||
| date | darvic | metal | location / nest# | species | sexe | age | wing | mass | head+ bill | bill | tarsus | gonys | |
| 28-04-2025 | g-A|G | CONTROL | |||||||||||
| 25-05-2025 | g-T|Z | 5641853 | 38 | PONT | pullus | 364 | 77,2 | ||||||
| 25-05-2025 | g-T|0 | 5641854 | 38 | PONT | pullus | 506 | 86,3 | ||||||
| 09-06-2025 | g-T|0 | 865 | |||||||||||
| 09-06-2025 | g-T|Z | 775 | |||||||||||
| 14-06-2025 | G-T|Z | dam 2 WATER | PONT | pullus | 259 | 803 | |||||||
| 14-06-2025 | G-T|0 | dam 2 WATER | PONT | pullus | 294 | 953 | |||||||
OBSERVATIONS:
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| 16-03-2025 | nest | g-A|G & partner at location 2024 (nest 38, dam 2)
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| 25-03 | nest | g-A|G & partner at location 2024 (nest 38, dam 2)
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| 04-04 | nest | g-A|G & partner at location 2024 (nest 38, dam 2)
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| 21-04 | eggs | 3x eggs measured
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| 23-04 | adult | attempt to trap unringed adult, Failed.
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| 28-04 | adult | attempted to catch female cachinnans, caught g-A|G swabbed for flu
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| 13-05-2025 | chicks | 1 chick, 2 eggs hatching
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| 25-05-2025 | chicks | 2 chicks ringed, 3rd??
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| 09-06-2025 | chicks | 2 chicks found and measured, probably no 3rd chick
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| 14-06-2025 | chicks | 2 chicks caught on water, probably 2 chicks this year
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below: Caspian Gull cachinnans T|0 1CY, July 09 2025, colony Lelystad, the Netherlands. Picture: Marsd Muusse.
G-T|Z & G-T|0.
below: Caspian Gull cachinnans T|0 1CY, June 29 2025, colony Lelystad, the Netherlands. Picture: Thijs Horst.
below: Caspian Gull cachinnans T|0 1CY, June 09 2025, colony Lelystad, the Netherlands. Picture: Thijs Horst.
| date | darvic | metal | nest | species | sexe | age | wing | mass | head+ bill | bill | gonys | barcode | comments |
| 25-05-2025 | G-T|0 | .5641854 | 38 | PONT | pullus | 506 | 86,3 | Ringed pullus | |||||
| 09-06-2025 | G-T|0 | .5641854 | 38 | PONT | pullus | 865 | |||||||
| 14-06-2025 | G-T|0 | dam 2 WATER | PONT | pullus | 294 | 953 |
below: Caspian Gull cachinnans T|0 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 |
| 25-05-2025 | G-T|0 | .5641854 | 38 | PONT | pullus | 506 | 86,3 | Ringed pullus | |||||
| 09-06-2025 | G-T|0 | .5641854 | 38 | PONT | pullus | 865 | |||||||
| 14-06-2025 | G-T|0 | dam 2 WATER | PONT | pullus | 294 | 953 |
