Larus cachinnans in the Netherlands
(last update: August 16, 2020)
Albert de Jong
Leon Kelder
Roland-Jan Buijs
Thijs Horst
Merijn Loeve
Mars Muusse
Cachinnans - Herring Gull nest 024 "Heineken"
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 024 / Heineken, at blocks ga 1, west part. Heineken crate, 4 mtr E above Vliertje.
- Positive ID in 2025: Herring Gulls.
| location | April 23 2025: 3 eggs (full clutch). | April 23 2025: 3 eggs (full clutch). | . |
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| pullus | June 09 2025: chick b/r-JS. Fledged. | July 09 2025: chick b/r-JT. Fledged. | June 25 2025: chick b/r-JU. Fledged. |
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Data for nest 024-Heineken.
| 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 | |
| 024 Heineken | teus | teus | 71 | 49,7 | 68,1 | 48,3 | 67 | 46,2 | 3 | |||||
| dam: | dam 1 blocks
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| location: | blocks west part, Heineken crate, 4 mtr E above Vliertje.
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| parents: | new nest in route, but unringed Herrings have been breeding in this area for years. | |||||||||||||
| ring pulli: | ||||||||||||||
| date | darvic | metal | location / nest# | species | sexe | age | wing | mass | head+ bill | bill | tarsus | gonys | greyscale | |
| 31-05-2025 | b/r-JS | 6254567 | 024 | ZM | pullus | 738 | ringed pullus | |||||||
| 31-05-2025 | b/r-JT | 6254568 | 024 | ZM | pullus | 728 | ringed pullus | |||||||
| 31-05-2025 | b/r-JU | 6254569 | 024 | ZM | pullus | 711 | ringed pullus | |||||||
| 09-06-2025 | B/R-JS | 6254567
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024 | ZM | pullus | 1039 | CONTROL | |||||||
| 09-06-2025 | B/R-JT | 6254568
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024 | ZM | pullus | 942 | CONTROL | |||||||
| 09-06-2025 | B/R-JU | 6254569
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024 | ZM | pullus | 800 | CONTROL | |||||||
| 14-06-2025 | B/R-JS | 6254567 | 024 | ZM | pullus | 1083 | CONTROL | |||||||
| 14-06-2025 | B/R-JU | 6254569 | 024 | ZM | pullus | 683 | CONTROL | |||||||
OBSERVATIONS:
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| 23-04-2025 | eggs | 3 eggs, measured.
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| 28-04-2025 | nest | adult HG breeding
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| 01-05-2025 | adult | Herring incubating.
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| 31-05-2025 | chicks | 3x chicks ringed
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| food | 1x rice, 1x meatball
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| 09-06-2025 | chicks | all chicks found and measured
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| 14-06-2025 | chicks | 2 chicks found and measured
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