Larus cachinnans in the Netherlands
(last update: August 16, 2020)
Caspian Gull cachinnans 7.+ 1CY, May 11 2023, Lelystad colony, the Netherlands. Picture: Thijs Horst.
Tibia ring R-7.+ and metal NLA 5.556.458, ringed as pullus Larus cachinnans on May 11 2023 in nest 252 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: |
| cach x cach | 252-2023 | 73,5 | 48,1 | 85,62 | 74 | 49,2 | 90,19 | 70,5 | 49 | 85,23 | 261,04 |
| ring pulli: May 12 | laying A egg: April 07 | hatch A egg: May 05 | |||||||||
| catch: | date: | metal: | darvic: | ||||||||
| pullus | 11-5-2023 | 5.556.457 | r-7.9 | few days old | |||||||
| pullus | 11-5-2023 | 5.556.458 | r-7.+ | few days old | |||||||
| pullus | 18-5-2023 | mass: | head+bill: | nothing present | |||||||
| pullus | 27-5-2023 | 5.625.262 | g-8|8 | 577 | 262 | ||||||
| 252-2023 | Nest "dustbin" (Vuilnisbakkie) | ||
| dam: | dam 2 central | ||
| location: | 2 mtr W of nest 18 "nest with blue rope". Black plastic sprayed with white + sign. | ||
| breeders: | cach x cach | ||
| OBSERVATIONS: | |||
| 09-04-2023 | nest: | 2 eggs measured. No watertest. | |
| 26-04-2023 | nest: | 3 eggs. Measured. | |
| 27-04-2023 | adult: | adult female cach & 5/6CY male cach | |
| 11-05-2023 | pulli: | 2 chicks ringed, other chick? | |
| 13-05-2023 | adult: | ||
| 18-05-2023 | pulli: | Nest empty, no chicks found | |
| 27-05-2023 | pulli: | 1x extra pullus ringed and measured. | |
| 25-06-2023 | pulli: | G-8|8 present. | |
below: Caspian Gull cachinnans 7.+ 1CY, May 11 2023, Lelystad colony, the Netherlands. Picture: Thijs Horst.
