Larus cachinnans in the Netherlands
(last update: August 16, 2020)
Coordinators:
Albert de Jong
Leon Kelder
Roland-Jan Buijs
Thijs Horst
Merijn Loeve
Mars Muusse
Cachinnans - nest Lelystad g-A|F (265)
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 265 positioned on breakwater dam 2 east, just east of blocks, close to XCHP, blue rope on north side.
- In 2024: one parent is Caspian Gull. This male trapped in April 2024, now g-A|F. Dark centre in primary covert may indicate 5CY/6CY bird. Other is Herring Gull type.
| location: | April 21st, 2024: blue rope on north side. | April 23rd, 2024: female Herring Gull. | April 23rd, 2024: nest near Blackberry. |
 |
 |
 |
|
| eggs: | April 21st, 2024: nest near Blackberry. | April 21st, 2024: 2 eggs in nest. | . |
 |
 |
||
| partner 1 | April 23rd, 2024: male Caspian Gull. | April 23rd, 2024: male Caspian Gull. | April 23rd, 2024: male Caspian Gull. |
 |
 |
 |
|
| partner 1 | April 23rd, 2024: male Caspian Gull. | April 23rd, 2024: male Caspian Gull. | April 30th, 2024: male Caspian Gull now g-A|F. |
 |
 |
 |
|
| partner 2 | May 02 2024: 5CY female Caspian Gull. | May 02 2024: 5CY female Caspian Gull. | May 02 2024: 5CY female Caspian Gull. |
 |
 |
 |
|
| partner 2 | May 02 2024: 5CY female Caspian Gull. | May 02 2024: 5CY female Caspian Gull. | May 02 2024: 5CY female Caspian Gull. |
 |
 |
 |
|
| pulli | . | ||
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: | |
| 73,6 | 49,3 | 90,07 | 75 | 49,5 | 92,53 | 0,00 | 182,60 | ||||||
| 265-2024 | # eggs | A-egg | hatch | # ringed chicks | # all chicks | # fledged chicks | comments | ||||||
| 17-4-2024 | 15-5-2024 | ||||||||||||
| dam: | dam 2 east at soos | ||||||||||||
| location: | near Blackberry, close to XCHP, blue rope on north side | ||||||||||||
| parents? | New nest. | ||||||||||||
| ring pulli: | 21-May | ||||||||||||
| date | darvic | metal | location / nest# | species | sexe | age | wing | mass | head+ bill | bill | tarsus | gonys | greyscale | 30-4-2024 | g-A|F | .5625295 | Dam 2 soos nest | PONT | M | >4CY | 469 | 1085 | 134 | 56,9 | 73,9 | 20,1 | 6 |
| OBSERVATIONS: | |||||||||||||
| 21-04-2024 | eggs: | 2 eggs, measured. | |||||||||||
| adults: | mixed pair? | ||||||||||||
| 23-04-2024 | adults: | mixed pair: male is Caspian Gull, female is Herring Gull. Left wing P10 with white island. | |||||||||||
| 26-04-2024 | eggs: | 2 eggs. | |||||||||||
| 30-04-2024 | adults: | trapped adult male Caspian Gull at nest, incubating 2 eggs. | |||||||||||
| 02-05-2024 | adults: | mixed pair. | |||||||||||
| 04-06-2024 | adult: | g-A|F present in territory. | |||||||||||