Larus cachinnans in the Netherlands
(last update: August 16, 2020)
Caspian Gull cachinnans N|T adult, 2025, colony Lelystad, the Netherlands. Picture: Thijs Horst & Mars Muusse.
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Tibia G-N|T and metal NLA 6.254.560, ringed as breeding adult Larus cachinnans on May 01 2025 at Lelystad, the Netherlands. Ringed by Roland-Jan Buijs ringing team (Mars Muusse / Thijs Horst / Fred Cottaar).
Recoveries:
05-05-2025 Lelystad (Bataviahaven), Flevoland, NL 5.230,00 N 525,00 E colourring read Thijs Horst
08-05-2025 Lelystad (Bataviahaven), Flevoland, NL 5.230,00 N 525,00 E colourring read Thijs Horst
Visits and data 2025 nest g-N|T & b/rJJ (048).
| 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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| g-N|T & b/rJJ | cach | teus | |||||||||||
| (048) | |||||||||||||
| dam: | dam 2 | ||||||||||||
| location: | was 48 (formerly 15B) in 2023 and 2024 under prunus, Third nest left of 17, Letter = white M on block.
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| parents: | same as 2023-2024
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| ringed: | |||||||||||||
| date | darvic | metal | location / nest# | species | sexe | age | wing | mass | head+ bill | bill | tarsus | gonys | greyscale |
| 01-05-2025 | b/r-JJ | 6254559 | 48 | ZM | F | >4CY | 402 | 906 | 115,6 | 48,4 | 60,6 | 19,3 | 5,5 |
| 01-05-2025 | g-N|T | 6254560 | 48 | PONT | M | >4CY | 473 | 1249 | 136,2 | 63,4 | 73,7 | 22 | 6 |
| 09-06-2025 | G-R|3 | 5641929 | 48 / K | HYBRID | pullus | 484 | |||||||
OBSERVATIONS:
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| 16-03-2025 | adult | male cachinnans & female Herring on blocks in front of nest 48 (15B).
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| 23-04 | nest | Nest 48 empty. Nest 42 has 3 eggs.
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| adult | male cachinnans from blocks at nest 42 (middle nest KLM). might be nest 42 or 48
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| 01-05 | nest | pair moved 3 mtr west, 3 eggs.
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| adult | trapped female Herring Gull.
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| adult | trapped male Caspian Gull.
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| 08-05-2025 | adult | both partners present.
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| 09-06-2025 | chick | 1 chick found and ringed. Eventually, not fledged, hence failed season.
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below: Caspian Gull cachinnans N|T adult, May 08 2025, colony Lelystad, the Netherlands. Picture: Thijs Horst & Mars Muusse.
below: Caspian Gull cachinnans N|T adult, May 05 2025, colony Lelystad, the Netherlands. Picture: Thijs Horst & Mars Muusse.
below: Caspian Gull cachinnans N|T adult, May 05 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 | 1-5-2025 | G-N|T | .6254560 | 48 | PONT | M | >4CY | 473 | 1249 | 136,2 | 63,4 | 73,7 | 22 | 6 | 25B00660 | Trapped by ringer. |
