Larus cachinnans in the Netherlands
(last update: August 16, 2020)
Albert de Jong
Merijn Loeve
Roland-Jan Buijs
Thijs Horst
Leon Kelder
Mars Muusse
Cachinnans - nest Lelystad n-F|T & g-A|A (was 035)
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 n-F|T positioned on dam 1 eastern section. Location of 035-2023 the "Caspians always fighting the Herrings".
- ID certain in 2024: male n[F|T] is Caspian Gull, female is Caspian Gull g[A|A].
| partner 1 | April 21st, 2024: nest marked. | April 26th, 2024: both adults ringed. | April 21st, 2024: 3 eggs (full clutch). |
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| partner 1 | March 08 2024: Caspian Gull male n[F|T] | April 21 2024: male n[F|T] incubating | April 21 2024: Caspian Gull male n[F|T] |
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| April 21 2024: Caspian Gull male n[F|T] | . | . | |
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| partner 2 | April 23 2024: Caspian Gull female trapped: g-A|A | April 23 2024: Caspian Gull female trapped: g-A|A | April 23 2024: Caspian Gull female trapped: g-A|A |
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| pullus | May 14 2024: metal NLA 5.631.182. | May 31 2024: chick g-C|6. | . |
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| food | June 04 2024: fish around nest. | June 04 2024: fish around nest. | June 04 2024: fish around nest. |
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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: | |
| n-F|T & g-A|A | cach | cach | 69,3 | 51 | 90,76 | 69,3 | 48,9 | 83,44 | 68,5 | 50 | 86,22 | 260,42 | |
| 2024 | # eggs | A-egg | hatch | # ringed chicks | # all chicks | # fledged chicks | comments | ||||||
| 3 | 15-4-2024 | 13-5-2024 | |||||||||||
| dam: | dam 1 east | ||||||||||||
| location: | Location was 25-2022/2023, near PNED, on N side dam, with furious birds. Sprayed '#'. | ||||||||||||
| parents? | 2023 prospecting n-F|T. | ||||||||||||
| ringed birds: | 18-May | ||||||||||||
| date | darvic | metal | location / nest# | species | sexe | age | wing | mass | head+ bill | bill | tarsus | gonys | greyscale |
| 23-04-2024 | g-A|A | .5625288 | nest n-F|T | PONT | F | >4CY | 441 | 124,5 | 54,7 | 70,0 | 18,9 | 6 | |
| 14-05-2024 | .5631182 | n-F|T / g-A|A | PONT | 1CY | 74 | ||||||||
| 14-05-2024 | .5631183 | n-F|T / g-A|A | PONT | 1CY | 62 | ||||||||
| 31-05-2024 | dead | .5631182 | n-F|T / g-A|A | PONT | |||||||||
| 31-05-2024 | g-C|6 | .5631183 | n-F|T / g-A|A | PONT | 1CY | ||||||||
| 04-06-2024 | g-C|6 | .5631183 | n-F|T / g-A|A | PONT | 1CY | 162 | 717 | 100,8 | |||||
| OBSERVATIONS: | |||||||||||||
| 08-03-2024 | adult: | n-F|T on bread. | |||||||||||
| 21-04-2024 | eggs: | 3 eggs, measured. | |||||||||||
| adults: | 5CY & adult. | ||||||||||||
| 23-04-2024 | adult | partner trapped at nest, now g-A|A. | |||||||||||
| 14-05-2024 | chicks: | 2x ringed, only metal. Chicks 1 day old. Prognose was exact. | |||||||||||
| 31-05-2024 | chicks: | 1x ringed, darvic added. | |||||||||||
| 1x dead chick. NLA 5631182 died <3 days ago. | |||||||||||||
| 04-06-2024 | chick: | g-C|6 present. measured. | |||||||||||