Larus cachinnans in the Netherlands
(last update: August 16, 2020)
Albert de Jong
Merijn Loeve
Roland-Jan Buijs
Thijs Horst
Leon Kelder
Mars Muusse
Argenteus - nest Lelystad b/w-AC
General remarks:
- Eggs: Volume measured by Stonehouse (1964) and Spaans & Spaans (1975), which make comparison possible with data from Texel (Camphuysen pers comm 16.04.2020).
- Nest b/w-AC positioned on dam 1 western section, near yellow sign 2,5.
- ID certain in 2024: female parent is Herring Gull, ringed in 2024, now b/w-AC.
- Positive ID in 2025: female Herring Gull is b/w-AC.
| partner 1 | April 26 2024: trapped female Herring Gull b/w-AC. | April 26 2024: trapped female Herring Gull b/w-AC. | June 10 2025: Herring Gull b/w-AC at Almere dump. |
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Visits and data 2024.
| 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: | |
| b/w-AC 2024 | teus | teus | 66,3 | 45,7 | 69,72 | 70 | 47,3 | 78,85 | 72,2 | 48,5 | 85,51 | 234,08 | |
| # eggs | A-egg | hatch | # ringed chicks | # all chicks | # fledged chicks | comments | |||||||
| 3 | |||||||||||||
| dam: | dam 1 south | ||||||||||||
| location: | dam 1 western section, near yellow sign 2,5. | ||||||||||||
| parents? | new | ||||||||||||
| ring pulli: | 18-May | ||||||||||||
| date | darvic | metal | location / nest# | species | sexe | age | wing | mass | head+ bill | bill | tarsus | gonys | greyscale | 26-4-2024 | b/w-AC | .5625292 | Bataviahaven | ZM | F | >4CY | 400 | 830 | 115,0 | 48,7 | 60,7 | 18 | 5 |
| OBSERVATIONS: | |||||||||||||
| 26-4-2024 | adult: | Herring Gull female trapped at nest. | |||||||||||
Visits and data nest b/w-AC 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: | # eggs |
| b/w-AC | teus | teus | 71,9 | 48,6 | 70,8 | 47,8 | 68 | 46,6 | 3 | ||||
| dam: | dam 1 | ||||||||||||
| location: | underneath 2,5 sign at waterfronty lake side of dam, under willow | ||||||||||||
| parents: | nest b/w-AC. | ||||||||||||
| OBSERVATIONS: | |||||||||||||
| 28-04-2025 | eggs | 3x eggs measured
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| 01-05-2025 | adult | trapped with Chinaloop Thijs: adult b/w-AC | |||||||||||