Larus cachinnans in the Netherlands
(last update: August 16, 2020)
Herring Gull argenteus hybrid 8|N 1CY, May - June 2023, Lelystad colony, the Netherlands. Picture: Thijs Horst & Mars Muusse.
Tibia ring G-8|N and metal NLA 5.556.416, ringed as pullus Lasrus argentatus hybrid on May 18 2023 in nest 44 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? |
| hybrid x teus | 44-2023 | 68 | 51,3 | 90,10 | 67,6 | 51,2 | 89,22 | 66,7 | 50,6 | 85,99 | 265,31 | same as 2022 |
| ring pulli: 25-mei | laying A egg: 20-apr | hatch A egg: 18-mei | ||||||||||
| catch: | date: | metal: | darvic: | mass: | wing: | head+bill: | ||||||
| Pullus | 18-5-2023 | 5.556.414 | g-7|W | 68 | -- | 50 | ||||||
| Pullus | 18-5-2023 | 5.556.415 | g-7|X | 46 | -- | 49 | ||||||
| Pullus | 18-5-2023 | 5.556.416 | nn | 48 | -- | 46,1 | ||||||
| Pullus | 27-5-2023 | 5.556.415 | g-7|X | 328 | -- | -- | ||||||
| Pullus | 27-5-2023 | 5.556.416 | g-8|N | 227 | -- | -- | ||||||
| Pullus | 18-6-2023 | 5.556.415 | g-7|X | 975 | 280 | 113,3 | hybrid / Herring | |||||
| Pullus | 25-6-2023 | 5.556.416 | g-8|N | 870 | 286 | 105,9 | hybrid / Herring | |||||
| Pullus | 25-6-2023 | 5.556.415 | g-7|X | 982 | 330 | 119,2 | hybrid / Herring | |||||
| 44-2023 | nest achter de prunus | |||||
| dam: | dam 2 central | |||||
| location: | Is nest 44-2022. 20 mtr E of nest 14, behind trees. | |||||
| breeders: | River Gull-type (hybrid) x argenteus | |||||
| OBSERVATIONS: | ||||||
| 04-4-2023 | adult: | 2 adults at nest site. | ||||
| 09-4-2023 | nest: | no eggs, nest is ready. | ||||
| 26-4-2023 | nest: | 3 eggs measured, and water test: | A: 50 - tip bottom | |||
| B: 30 - tip bottom | ||||||
| C: 40 - tip bottom | ||||||
| 11-5-2023 | nest | 3 eggs. | ||||
| 18-5-2023 | pulli: | 3x chicks ringed. 2x colour rings, 1x metal (too small for darvic ring). | ||||
| 27-5-2023 | pulli: | 2x chick measured, 1x extra colour ring g-8|N. | ||||
| 18-6-2023 | pulli: | swimming: G-7|X trapped. Measured. Herring Gull-type wing pattern. | ||||
| 25-6-2023 | pulli: | 2 chicks swimming g-7|X and g-8|N. Fledged: 2x juveniles. | ||||
below: Herring Gull argenteus hybrid 8|N 1CY, June 25 2023, Lelystad colony, the Netherlands. Picture: Thijs Horst & Mars Muusse.
below: Herring Gull argenteus hybrid 8|N 1CY, May 27 2023, Lelystad colony, the Netherlands. Picture: Thijs Horst & Mars Muusse.
below: Caspian Gull cachinnans NLA 5.556.416 1CY, May 27 2023, Lelystad colony, the Netherlands. Picture: Thijs Horst & Mars Muusse.
