Larus cachinnans in the Netherlands
(last update: August 16, 2020)
Caspian Gull cachinnans F|U 1CY, May - June 2021, Lelystad, the Netherlands. Picture: Albert de Jong & Mars Muusse.
Blue bar tibia ring b[F|U], ringed as pullus Larus cachinnans on May 28 2021 at nest 12 in colony Lelystad, the Netherlands.
ID certain, both parents are Caspian Gull cachinnans. Two other chicks from this nest also fledged, but remained unringed.
Caspian Gull cachinnans F|U 1CY, May 28 2021, Lelystad, the Netherlands.
Caspian Gull cachinnans F|U 1CY, June 08 2021, Lelystad, the Netherlands.
Visits and data nest 12.
| date: | ||||||
| 16-04-2021 | egg no: | width (mm) | length (mm) | volume (cm3): | water test on April 16th: | |
| A | 51,3 | 73,9 | 97,92 | 40 - tip on bottom | 3 eggs. | |
| B | 48,8 | 71 | 85,13 | 40 - tip on bottom | Also this year: eggs brownish. | |
| C | 51,2 | 76,3 | 100,71 | 35 - tip on bottom | ||
| sum nest: | 283,76 | |||||
| 26-04-2021 | No visit, Camilla is trapping a Spoonbill. | |||||
| 06-05-2021 | Sub-adult bird is breeding and flies off to attack canoe, then starts patrolling. Photographed. | |||||
| 13-05-2021 | Again bird photographed that belongs to this nest. | |||||
| 15-05-2021 | Extensive control day for dam 2, including this nest. 3 chicks present, very well hidden in vegetation. | |||||
| A | 193 gr Mass | |||||
| B | 182 gr Mass | |||||
| C | 152 gr Mass | |||||
| 28-05-2021 | Both adults on top of blue sign, alarming to chicks to hide. Photographed. Chicks present, but impossible to find them. Later, one chick swimming. | |||||
| metal | tibia | mass | head + bill | |||
| pullus | .5559406 | b-F|U | >400 | 99 | Swimming chick north of dam 2 between fish traps, protected by (flying) parent. | |
| 08-06-2021 | Sub-adult (5CY, with black in tail) protects 3 swimming chicks, north of dam 2 between fish traps. | |||||
| 26-06-2021 | No activity near nest. Abandoned, juveniles fledged. | |||||