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-AD
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-AD positioned on dam 1 western section, near yellow sign 2,5.
- ID certain in 2024: female parent is Herring Gull, was nla 6143017 (pullus 2007 Moerdijk), now b/w-AD. Male is also Herring Gull.
| location | April 21st, 2024: location Herriing nest at yellow 2,5. | April 21st, 2024: 2 eggs. | . |
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| partner 1 | April 26 2024: trapped 18CY Herring Gull b/w-AD. | April 26 2024: trapped 18CY female Herring Gull b/w-AD. | March 25 2025: Herring Gull b/w-AD 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-AD 2024 | teus | teus | 71 | 51 | 92,98 | 65 | 49 | 78,58 | 66,3 | 47,6 | 75,64 | 247,20 | |
| # 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. White crate, south side dam near Blackberry | ||||||||||||
| 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-AD | .5625290 | Bataviahaven | ZM | F | >4CY | 401 | 771 | 112,7 | 46,4 | 62,0 | 18,6 | 4,5 |
| OBSERVATIONS: | |||||||||||||
| 21-4-2024 | eggs: | 2 eggs measured. | |||||||||||
| 26-4-2024 | eggs: | C-egg measured. | |||||||||||
| adult: | Herring Gull female trapped at nest. Now b/w-AD. | ||||||||||||
Visits and data nest b/w-AD (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 | |
| b/w-AD | teus | 64,4 | 47,7 | 67,3 | 50 | 65,5 | 48,6 | 3 | ||||||
| dam: | dam 1 | |||||||||||||
| location: | Opposite yacht harbour, nest bw-AD 2024. Again in 2025.
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| ouders: | same as 2024
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| ringed: | ||||||||||||||
| date | darvic | metal | location / nest# | species | sexe | age | wing | mass | head+ bill | bill | tarsus | gonys | greyscale | |
OBSERVATIONS:
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| 4/23/2025 | adult | b/w-AD sitting, off the nest, but very quickly back again, suggesting eggs present.
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| 4/28/2025 | eggs | 3x eggs measured.
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| adult | attempted to catch unringed partner, failed.
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