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 007
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 007 positioned on artificial breakwater 1 at T-split. Location is "Nest Blue chair North", 7 mtr from Blue chair South.
- Certainty on ID in 2024, both are Caspian Gull cachinnans, one is 5CY.
| location | April 21st, 2024: 3 eggs. | April 21st, 2024: 3 eggs. | . |
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| partner 1 | April 26 2024: Caspian Gull is incubating. | April 30 2024: Caspian Gull. | April 30 2024: Caspian Gull. |
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| partner 2 | April 30 2024: Caspian Gull 5CY. | April 30 2024: Caspian Gull 5CY. | . |
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| pullus | June 18th, 2024: pullus g-C|C. | May 14th, 2024: pullus g-C|D. | . |
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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: | |
| 007-2024 | cach | 69,2 | 49,8 | 86,41 | 70,7 | 50,7 | 91,50 | 67 | 49,4 | 82,32 | 260,24 | ||
| # eggs | A-egg | hatch | # ringed chicks | # all chicks | # fledged chicks | comments | |||||||
| 3 | 15-4-2024 | 13-5-2024 | |||||||||||
| dam: | dam 1 T-split | ||||||||||||
| location: | Nest Blue chair North, 7 mtr from Blue chair South. | ||||||||||||
| parents? | New | ||||||||||||
| ring pulli: | 18-May | ||||||||||||
| date | darvic | metal | location / nest# | species | sexe | age | wing | mass | head+ bill | bill | tarsus | gonys | greyscale |
| 14-05-2024 | g-C|C | .5631200 | nest 7 (stoel N) | PONT | 1CY | 82 | |||||||
| 14-05-2024 | g-C|D | .5631101 | nest 7 (stoel N) | PONT | 1CY | 100 | |||||||
| 31-05-2024 | g-C|C | .5631200 | nest 7 (stoel N) | PONT | 1CY | ||||||||
| 31-05-2024 | g-C|D | .5631101 | nest 7 (stoel N) | PONT | 1CY | ||||||||
| OBSERVATIONS: | |||||||||||||
| 21-04-2024 | eggs: | 3 eggs, measured. | |||||||||||
| nest: | Caspian Gull incubating. | ||||||||||||
| 26-04-2024 | adults: | Caspian Gull is incubating. | |||||||||||
| 30-04-2024 | adults: | 2x Caspian Gull photographed. | |||||||||||
| 07-05-2024 | eggs: | 3x. | |||||||||||
| 14-05-2024 | chicks: | 2x ringed. Fish bolus when processed. | |||||||||||
| food: | Fish. | ||||||||||||
| eggs: | 1x in nest. | ||||||||||||
| 31-05-2024 | chicks: | CONTROLL: g-C|C & g-C|D. | |||||||||||
| 18-06-2024 | chick: | CONTROLL: g-C|C at water. Later on blocks. | |||||||||||