Larus cachinnans in the Netherlands
(last update: August 16, 2020)
Caspian Gull cachinnans 7.7 1CY, May 2023, Lelystad colony, the Netherlands. Picture: Thijs Horst & Mars Muusse.
Tibia ring R-7.7 and metal NLA 5.556.454, ringed as pullus Larus cachinnans on May 11 2023 in nest y-X60J 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 | X60J-2023 | 71,6 | 49 | 86,56 | 71,5 | 49,2 | 87,14 | 69,5 | 47,7 | 79,62 | 253,32 | X60J & cach |
| ring pulli: 14-mei | laying A egg: 9-apr | hatch A egg: 7-mei | ||||||||||
| catch: | date: | metal: | darvic: | mass: | ||||||||
| pullus | 11-05-2023 | 5.556.454 | r 7.7 | -- | very small | |||||||
| pullus | 27-05-2023 | 5.556.454 | r-7.7 | 649 | ||||||||
| pullus | 27-05-2023 | 5.625.256 | g-8|9 | 755 | ||||||||
| X60J-2023 | |||
| dam: | dam 2 west | ||
| location: | 2 mtr E of lighthouse. | ||
| breeders: | cach x cach | ||
| OBSERVATIONS: | |||
| 09-04-2023 | nest: | 1 egg measured. No watertest, ring chicks in 1st session. Parent is yX60J 5CY. | |
| 26-04-2023 | nest: | 3 eggs. Measured, no water test, date of A-egg known. | |
| 27-04-2023 | adult: | 4CY cach at nest = partner 2. | |
| 30-04-2023 | adult: | X60J at nest. | |
| 11-05-2023 | pulli | 1 chick ringed, 2 other chicks? | |
| 27-05-2023 | pulli | 2x chicks measured: r-77 & g-8|9. | |
| adult: | patrolling overhead in this area: w[482:U]. | ||
| 25-06-2023 | adult: | X60J present in water north of dam 2, with 1 unringed chick. Result: 3 chicks fledged (?) at nest X60J. | |
below: Caspian Gull cachinnans 7.7 1CY, May 11 2023, Lelystad colony, the Netherlands. Picture: Thijs Horst & Mars Muusse.
below: Caspian Gull cachinnans 7.7 1CY, May 11 2023, Lelystad colony, the Netherlands. Picture: Thijs Horst & Mars Muusse.
