Larus cachinnans in the Netherlands
(last update: August 16, 2020)
Caspian Gull cachinnans T|= 1CY, 2025, colony Lelystad, the Netherlands. Picture: Thijs Horst.
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Tibia G-T|= and metal NLA 5.641.894, ringed as pullus Larus cachinnans on May 31 2025 at Lelystad, the Netherlands. Ringed by Roland-Jan Buijs ringing team (Mars Muusse / Thijs Horst / Fred Cottaar).
Mother: 7CY Caspian Gull r-CS.
Father: 7CY Caspian Gull.
Nest: r-CS (108) 2025.
In 2025: g-T|= only fledged chick. Fledging rate for this 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
11-07-2025 Markermeer (Marker Wadden), Flevoland, NL 5.235,00 N 522,00 E colourring read Thijs Horst
18-07-2025 IJsselmeer (De Kreupel), Noord-Holland, NL 5.247,00 N 513,00 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 |
| r-CS | cach 7CY | cach | 73,2 | 50,5 | 71,4 | 49,3 | 70,6 | 51,2 | 3 | ||||
| dam: | dam 1 T split
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| location: | nest r-CS, same as 2022-2024
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| parents: | same as 2024
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| ringed: | |||||||||||||
| date | darvic | metal | location / nest# | species | sexe | age | wing | mass | head+ bill | bill | tarsus | gonys | |
| 31-05-2025 | G-T|= | 5641894 | r-CS | PONT | pullus | 849 | 109,7 | ||||||
OBSERVATIONS:
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| 16-03-2025 | nest | r-CS at location 2024 with unringed partner
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| 20-03 | nest | r-CS present at nest location
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| 21-03 | nest | r-CS present at nest location
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| 01-04 | nest | r-CS present at nest location
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| 23-04 | eggs | 3 eggs, measured
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| 01-05 | adult | r-CS present
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| 13-05 | nest | nest empty, no chicks found
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| 31-05 | chick | 1 chick ringed
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below: Caspian Gull cachinnans T|= 1CY, July 11 2025, Marker Wadden, the Netherlands. Picture: Thijs Horst.
Today at Marker Wadden, together with mother r-CS.
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below: Caspian Gull cachinnans T|= 1CY, June 30 2025, colony Lelystad, the Netherlands. Picture: Thijs Horst.
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below: Caspian Gull cachinnans T|= 1CY, June 29 2025, colony Lelystad, the Netherlands. Picture: Thijs Horst.
below: Caspian Gull cachinnans T|= 1CY, June 25 2025, colony Lelystad, the Netherlands. Picture: Thijs Horst.
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| date | darvic | metal | nest | species | sexe | age | wing | mass | head+ bill | bill | gonys | barcode | comments |
| 31-5-2025 | G-T|= | .5641894 | r-CS | PONT | pullus | 849 | 109,7 | Ringed pullus |