Larus cachinnans in the Netherlands
(last update: August 16, 2020)
Caspian Gull cachinnans T|C 1CY, 2025, colony Lelystad, the Netherlands. Picture: Thijs Horst & Mars Muusse.
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Tibia G-T|C and metal NLA 5.641.065, 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: adult Caspian Gull g-N|F.
Father: adult Caspian Gull g-N|D.
Nest: g-N|D & g-N|F (034). In 2025, G-T|A & G-T|B fledged, g-T|C not seen after ringing. Fledging rate for this nest 2025 = 2,0.
Recoveries:
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Visits and data 2025 g-N|D & g-N|F (034).
| 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-N|D & g-N|F (034) | cach | 69 | 50,8 | 67,7 | 52,3 | 66 | 48,7 | 3 | ||||||
| dam: | dam 1 blocks
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| location: | Nest 34 Roodflapje, at blocks east part, nest red flag
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| ouders: | same as 2024, this year trapped. Now male is g-N|D and female is g-N|F.
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| ringed: | ||||||||||||||
| date | darvic | metal | location / nest# | species | sexe | age | wing | mass | head+ bill | bill | tarsus | gonys | greyscale | |
| 28-04-2025 | g-N|D | 5641013 | 34, roodflapje | PONT | M | >4CY | 474 | 1200 | 132 | 62,1 | 76 | 20 | 5 | |
| 28-04-2025 | g-N|F | 5641014 | 34, roodflapje | PONT | F | >4CY | 436 | 972 | 123,8 | 54,4 | 66,6 | 18,8 | 7 | |
| 13-05-2025 | g-T|A | 5641063 | 34 | PONT | pullus | 376 | ||||||||
| 13-05-2025 | g-T|B | 5641064 | 34 | PONT | pullus | 373 | ||||||||
| 13-05-2025 | g-T|C | 5641065 | 34 | PONT | pullus | 270 | ||||||||
| 09-06-2025 | G-T|A | 5641063 | PONT | pullus | 764 | CONTROL | ||||||||
| 14-06-2025 | G-T|A | PONT | pullus | 851 | CONTROL | |||||||||
OBSERVATIONS:
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| 23-04-2025 | eggs | 3 eggs, measured, Small sizes!
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| 28-04 | eggs | 3 eggs | ||||||||||||
| adult | trapped both adult at nest nowg-N|D and g-N|F
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| food | g-N|D hasa bolus of chicken + fish, g-N|F has bolus of fish (roach and perch)
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| 01-05 | adult | both partners present | ||||||||||||
| 08-05 | adult | both partners present
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| 13-05 | chicks | 3x chicks ringed
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| 09-06 | chicks | g-T|A found and measured
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| 14-06-2025 | chicks | g-T|A found and measured
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below: Caspian Gull cachinnans T|C 1CY, May 13 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 |
| 13-5-2025 | G-T|C | .5641065 | 34 | PONT | pullus | 270 | Ringed pullus |
