Larus cachinnans in the Netherlands
(last update: August 16, 2020)
Caspian Gull cachinnans 8.1 1CY, May - July 2023, Lelystad colony, the Netherlands. Picture: Thijs Horst & Mars Muusse.
Tibia ring R-8.1 and metal NLA 5.556.487, ringed as pullus Larus cachinnans on May 18 2023 in nest r-CG 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 | r-C.G | 0 | 0 | 0,00 | 0 | 0 | 0,00 | 0 | 0 | 0,00 | 0,00 | r-CG & new male cach |
| ring pulli:15-mei | laying A egg: 10-apr | hatch A egg: 8-mei | ||||||||||
| catch: | date: | metal: | darvic: | mass: | wing: | head+bill: | bill: | gonys: | greytone: | |||
| adult | 03-05-2023 | 5625054 | r-CG | 830 ? | 438 | 126,5 | 56,9 | 18,6 | 4 | female cach retrap | ||
| pullus | 18-05-2023 | 5556486 | -- | 74 | -- | 47,2 | -- | -- | -- | mass without ring | ||
| pullus | 18-05-2023 | 5556487 | R-81 | 77 | -- | 52 | -- | -- | -- | |||
| pullus | 27-05-2023 | 5556487 | R-81 | 397 | -- | -- | -- | -- | -- | |||
| r-C.G (was y[PHSV]) | ||
| dam: | dam 1 west | |
| location: | opposite harbour, next to largest willow. In Blackberry bush. | |
| breeders: | cach x cach | |
| OBSERVATIONS: | ||
| 22-4-2023 | nest: | 2 eggs. |
| 27-4-2023 | adult: | 2x cachinnans, parent 1 is r-CG, parent 2 is short thayeri P10. |
| nest: | in Blackberry. Location as 2022. | |
| 3-mei | adult: | retrap r-CG on 3 eggs. |
| 11-5-2023 | nest: | 3 eggs. |
| 18-5-2023 | pulli: | 2 chicks ringed, 1 egg hatching. |
| 27-5-2023 | pulli: | 1x control chick R-81. |
| 18-6-2023 | adult: | r-CG attacks near nest but no chicks found. Presenr are 2x Herring chicks from neighbour nest. |
| 25-6-2023 | pulli: | r-81 and r-CG present. |
below: Caspian Gull cachinnans 8.1 1CY, July 08 2023, Lelystad colony, the Netherlands. Picture: Thijs Horst & Mars Muusse.
below: Caspian Gull cachinnans 8.1 1CY, June 25 2023, Lelystad colony, the Netherlands. Picture: Thijs Horst & Mars Muusse.
below: Caspian Gull cachinnans 8.1 1CY, May 18 2023, Lelystad colony, the Netherlands. Picture: Thijs Horst.
