Larus cachinnans in the Netherlands
(last update: August 16, 2020)
Caspian Gull cachinnans 8.W 1CY, May 11 2023, Lelystad colony, the Netherlands. Picture: Thijs Horst.
Tibia ring R-8.H and metal NLA 5.556.467, ringed as pullus Larus cachinnans on May 11 2023 in nest 55 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 | 55-2023 | 68,6 | 50,6 | 88,44 | 68,1 | 51,6 | 91,29 | 65,1 | 48,8 | 78,06 | 257,79 | same as 2022 |
| ring pulli: 12-mei | laying A egg: 7-apr | hatch A egg: 5-mei | ||||||||||
| catch: | date: | metal: | darvic: | mass: | wing: | head+bill: | ||||||
| Pullus | 11-05-2023 | NLA 5556466 | r 8.W | -- | -- | -- | ||||||
| Pullus | 11-05-2023 | NLA 5556467 | r 8.H | -- | -- | -- | ||||||
| Pullus | 27-05-2023 | NLA 5556466 | r-8.W | -- | -- | -- | dead, 2 days ago. | |||||
| Pullus | 27-05-2023 | NLA 5556467 | r 8.H | 758 | -- | -- | not full of energy. | |||||
| Pullus | 18-06-2023 | NLA 5556467 | r-8.H | 586 | 268 | 108,6 | Looks very slim. | |||||
| 55-2023 | ||
| dam: | dam 2 east | |
| location: | next to large boulder which is lookout post, on top of dam, close to yXCHP & yzMT | |
| breeders: | cach x cach | |
| OBSERVATIONS: | ||
| 04-04-2023 | adult: | 2 adult cach on lookout stone. |
| 09-04-2023 | adult: | 2 adult cach on lookout stone. |
| nest: | 2 eggs measured. No watertest, ring chicks in 1st session. | |
| 26-04-2023 | nest: | 3 eggs, all measured. |
| 27-04-2023 | nest: | 3 eggs. |
| adult: | 2 adults present. | |
| 11-05-2023 | pulli: | 2 chicks ringed, is there a 3rd chick? |
| 13-05-2023 | adult: | female & male photographed, exactly same as in 2022. |
| 18-05-2023 | nest: | nest empyt, no chicks found |
| 27-05-2023 | pulli: | 1x dead chick is r-8.W, 2 days ago; 1x chick measured, a bit down, low in energy. |
| 18-06-2023 | pulli: | r-8H present, looks very slim and not healthy. Fledging rate: 1 chick. |
below: Caspian Gull cachinnans 8.W 1CY, May 11 2023, Lelystad colony, the Netherlands. Picture: Thijs Horst.
