Larus cachinnans in the Netherlands
(last update: August 16, 2020)
Caspian Gull cachinnans 8.V 1CY, May 11 2023, Lelystad colony, the Netherlands. Picture: Thijs Horst & Mars Muusse.
Tibia ring R-8.V and metal NLA 5.556.473, ringed as pullus Larus cachinnans on May 11 2023 in nest 108 at Lelystad, the Netherlands. Ringed by Roland-Jan Buijs ringing team.
Birdv dead. Ring found at colony check on April 12 2024.
| 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 | nest 108 | 74 | 49,7 | 92,03 | 68,2 | 49,8 | 85,16 | 69,7 | 48,6 | 82,89 | 260,08 | same as 2022 |
| ring pulli: 12-mei | laying A egg: 7-april | hatch A egg: 5-mei | ||||||||||
| catch: | date: | metal: | darvic: | |||||||||
| pull | 11-05-2023 | NLA 5.556.472 | r 8.P | |||||||||
| pull | 11-05-2023 | NLA 5.556.473 | r 8.V | |||||||||
| pull | 11-05-2023 | NLA 5.556.474 | r 8.4 | |||||||||
| pull | 18-06-2023 | NLA 5.556.472 | r-8.P | |||||||||
| pull | 18-06-2023 | NLA 5.556.474 | r-8.4 | |||||||||
| nest 108 | ||
| dam: | dam 1 T-split | |
| location: | on W-part, border bitumen - blocks. Top of dam. Coded. Exact spot as in 2022, then r[C.S] (which was at almere dump + partner, on 23/4). | |
| breeders: | cach x cach | |
| OBSERVATIONS: | ||
| 09-04-2023 | nest: | 2 eggs measured. No watertest. |
| adult: | 1x cachinnans unringed. Still not sure if r-CS is partner this season. | |
| 26-04-2023 | adult: | legs not visible. |
| nest: | 1,5 m NW is another nest, 2 eggs. LBBG? (on 27/4: yes, this is LBBG). | |
| eggs: | 3x egg, measured. No water test, ringing date known. | |
| 27-04-2023 | adult: | 5CY male cach. Unringed. |
| 11-05-2023 | pulli: | 3 chicks ringed. |
| 13-05-2023 | adult | partner 1 present. |
| 18-06-2023 | pulli: | r-8P and r-84 present. Large chicks. 2x juveniles fledged. (r-8V dead in colony) |
| 25-06-2023 | pulli: | r-8P present, other ring unreadable, probably r-8.4. |
below: Caspian Gull cachinnans 8.V 1CY, May 11 2023, Lelystad colony, the Netherlands. Picture: Thijs Horst & Mars Muusse.
