Larus cachinnans in the Netherlands
(last update: August 16, 2020)
Caspian Gull cachinnans 8.9 1CY, May - July 2023, Lelystad colony, the Netherlands. Picture: Thijs Horst & Mars Muusse.
Tibia ring R-8.9 and metal NLA 5.556.465, ringed as pullus Larus cachinnans on May 11 2023 in nest XCHP 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 | XCHP | 70,6 | 52,2 | 96,86 | 67 | 52,7 | 93,69 | 68,3 | 50,8 | 88,75 | 279,30 | 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 | 5.556.464 | r-8S | -- | -- | -- | ||||||
| Pullus | 11-05-2023 | 5.556.465 | r-89 | -- | -- | -- | ||||||
| Pullus | 18-05-2023 | 5.556.465 | r-89 | 550 | -- | 80,4 | ||||||
| Pullus | 27-05-2023 | 5.556.464 | r-8S | dead > 7 days ago. | ||||||||
| Pullus | 18-06-2023 | r-89 | 1103 | 362 | 130,7 | |||||||
| XCHP | ||||
| dam: | dam 2 east | |||
| location: | below large boulders, east side of blocks, closer to bitumen than 2022. | |||
| breeders: | cach x cach | |||
| OBSERVATIONS: | ||||
| 04-04-2023 | adult: | yXCHP present with partner. | ||
| 05-04-2023 | adult: | yXCHP present with partner. | ||
| 09-04-2023 | adult: | 2 adult cach present. One is yXCHP. | ||
| nest: | 2 eggs measured. No watertest, ring chicks in 1st session. | |||
| 26-04-2023 | nest: | 3 eggs, all measured. Red spot sprayed on stone. | ||
| 27-04-2023 | nest: | 3 eggs. | ||
| adult: | yXCHP present with partner. | |||
| 11-05-2023 | pulli: | 2 chicks ringed, 1 egg rotten | ||
| 13-05-2023 | adult: | yXCHP pictures. | ||
| 18-05-2023 | pulli: | R-89 present | ||
| 27-05-2023 | pulli: | dead chick near nest r-8S, dead >7 days. | ||
| 18-06-2023 | pulli: | r-89 present. Fledging success: 1 chick. | ||
| 25-05-2023 | pulli: | r-89 present with both parents | ||
below: Caspian Gull cachinnans 8.9 1CY, July 08 2023, Lelystad colony, the Netherlands. Picture: Thijs Horst & Mars Muusse.
below: Caspian Gull cachinnans 8.9 1CY, June 25 2023, Lelystad colony, the Netherlands. Picture: Thijs Horst & Mars Muusse.
below: Caspian Gull cachinnans 8.9 1CY, June 18 2023, Lelystad colony, the Netherlands. Picture: Thijs Horst & Mars Muusse.
below: Caspian Gull cachinnans 8.9 1CY, May 18 2023, Lelystad colony, the Netherlands. Picture: Thijs Horst.
