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 - nest Lelystad g-7|C (2026)
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 g-7|C positioned at blocks T-split, dam 1. Between P:U60 location and Blue Bucket location. Visible from S-side.
- ID certain in 2026: male is 4CY g-7|C (from nest PU60-2023).
| location | |||
| nest | . | . | . |
| April 26 2026: 2 eggs. | April 26 2026: 2 eggs. | . | |
| eggs |  |
 |
|
| partner 1 | March 19 2026: 4CY male g-7|C. | . | . |
 |
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| partner 2 | . | . | . |
| pullus | . | . | . |
Visits and data 2026.
| 2026 | 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 | |
| g-7|C | cach | cach | 73,1 | 50,0 | 70,0 | 49,2 | ||||||||
| ringed: | ||||||||||||||
| date | darvic | metal | location / nest# | species | sexe | age | wing | mass | head+ bill | bill | tarsus | gonys | greyscale | |
OBSERVATIONS:
|
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| 26-04-2026 | nest | 2 eggs, measured. | ||||||||||||
| parents | G-7|C at nest. With unringed Caspian. However, over the last weeks, many birds have joined g-7|C, not clear which is the partner. |
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