Larus cachinnans in the Netherlands
(last update: August 16, 2020)
Caspian Gull cachinnans 8|B 1CY, June - July 2023, Lelystad colony, the Netherlands. Picture: Thijs Horst & Mars Muusse.
Tibia ring G-8|B and metal NLA 5.625.251, ringed as pullus Larus cachinnans on May 27 2023 in nest 223 at Lelystad, the Netherlands. Ringed by Roland-Jan Buijs ringing team.
| egg sizes & volume 2023 | ||||||||||||
| SPECIES | NEST | A_length | A_width | A_volume | B_length | B_width | B_volume | C_length | C_width | C_volume | TOTAL NEST: | known parents? |
| cach x cach | 223-2023 | 77,1 | 50,4 | 98,61 | 73,9 | 47 | 82,19 | 71,3 | 47,7 | 81,68 | 262,48 | ? |
| ring pulli: May 28 | laying A egg: April 23 | hatch A egg: May 21 | ||||||||||
| catch: | date: | metal: | darvic: | mass: | wing: | head+bill: | bill: | gonys: | greytone: | |||
| Pullus | 27-5-2023 | 5.625.251 | g-8|B | 70 | ||||||||
| Pullus | 27-5-2023 | 5.625.252 | g-8|D | 120 | ||||||||
| Pullus | 27-5-2023 | 5.625.253 | g-8|E | 136 | ||||||||
| Pullus | 18-6-2023 | g-8|E | 773 | 206 | 105,9 | |||||||
| Pullus | 18-6-2023 | g-8|B | 671 | 174 | 96,9 | |||||||
| 223-2023 (was yX540-2022) | |||
| dam: | dam 2 central | ||
| location: | 5 mtr N of nest 17, visible from N-side. Same as 2022, then X540. | ||
| breeders: | cach x cach | ||
| OBSERVATIONS: | |||
| 04-04-2023 | adult: | 2 cach present, but not y-X540. | |
| 09-04-2023 | nest: | empty, but nest is ready. | |
| 26-04-2023 | nest: | 2 eggs. Location is old red spot = 223/yX540. Eggs measured, no water test. | |
| 11-05-2023 | nest: | 3 eggs, C egg measured | |
| 18-05-2023 | nest: | 3 eggs | |
| 27-05-2023 | pulli: | 3x ringed. | |
| 18-06-2023 | pulli: | g-8|B & g-8|E trapped in water, with net. Measured. Not in fledged cohort, too young. | |
| 08-07-2023 | pulli: | g-8|B, g-8|D & g-8|E present: 3 chicks fledged. | |
below: Caspian Gull cachinnans 8|B 1CY, July 08 2023, Lelystad colony, the Netherlands. Picture: Thijs Horst & Mars Muusse.
below: Caspian Gull cachinnans 8|B 1CY, June 18 2023, Lelystad colony, the Netherlands. Picture: Thijs Horst & Mars Muusse.
