Larus cachinnans in the Netherlands
(last update: August 16, 2020)
Caspian Gull cachinnans 7|Z 1CY-3CY, May 2023 - April 2025, Lelystad colony, the Netherlands. Picture: Thijs Horst & Mars Muusse.
Tibia G-7|Z and metal NLA 5.556.418, ringed as pullus Larus cachinnans on May 18 2023 in nest 253 at Lelystad, the Netherlands (5230.00 N 525.00 E). Ringer Merijn Loeve / Roland-Jan Buijs ringing team.
Recoveries:
18-05-2023 Lelystad (Bataviahaven), Flevoland, NL 5.230,00 N 525,00 E colourring read Thijs Horst
27-05-2023 Lelystad (Bataviahaven), Flevoland, NL 5.230,00 N 525,00 E colourring read Thijs Horst
18-06-2023 Lelystad (Bataviahaven), Flevoland, NL 5.230,00 N 525,00 E colourring read Thijs Horst
26-06-2023 Lelystad (Bataviahaven), Flevoland, NL 5.230,00 N 525,00 E colourring read Thijs Horst
15-07-2023 Lelystad (Bataviahaven), Flevoland, NL 5.230,00 N 525,00 E colourring read Thijs Horst
23-04-2025 Lelystad (Bataviahaven), Flevoland, NL 5.230,00 N 525,00 E colourring read Horst, Muusse(s) & Cottaar
14-06-2025 Lelystad (Bataviahaven), Flevoland, NL 5.230,00 N 525,00 E colourring read T. Horst & M. Muusse
Data for nest 253-2023:
| 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 | 253-2023 | 77,7 | 48,3 | 91,27 | 75,3 | 49,4 | 92,52 | 74 | 50,8 | 96,15 | 279,94 |
| ring pulli: May 25 | laying A egg: April 20 | hatch A egg: May 18 | |||||||||
| catch: | date: | darvic: | metal: | mass: | head+bill: | wing: | bill: | gonys: | greytone: | ||
| Pullus | 18-5-2023 | g-7|Z | 5.556.418 | 115 | 59,4 | ||||||
| Pullus | 18-5-2023 | g-7|0 | 5.556.419 | 74 | 52 | ||||||
| Pullus | 18-5-2023 | g-7|1 | 5.556.420 | 85 | 54 | ||||||
| Pullus | 27-5-2023 | g-7|Z | 5.556.418 | 474 | |||||||
| Pullus | 27-5-2023 | g-7|1 | 5.556.420 | 382 | |||||||
| Pullus | 18-6-2023 | g-7|Z | 5.556.418 | 1057 | 126,0 | 294 | |||||
| Pullus | 18-6-2023 | g-7|1 | 5.556.420 | 1153 | 113,1 | 281 | with 2x sibling | ||||
| Pullus | 25-6-2023 | g-7|1 | 5.556.420 | 1089 | 127,3 | 339 | |||||
| 253-2023 | |||||||
| dam: | dam 2 central | ||||||
| location: | 1 mtr W of nest 223, and 7 mtr N 17, only visible from N-side. | ||||||
| breeders: | cach x cach | ||||||
| OBSERVATIONS: | |||||||
| 26-4-2023 | location: | two nests at 1 mtr distance, 'behind' nest 17 (only visible from north). | |||||
| nest: | 3 eggs. Measured and water test: | A | 40 - tip bottom | ||||
| B | 30 - tip bottom | ||||||
| 27-04-2023 | adult: | 4CY cach and adult cach | C | 30 - tip bottom | |||
| 11-05-2023 | nest: | 3 eggs | |||||
| 18-05-2023 | pulli: | 3 chicks ringed | |||||
| 27-05-2023 | pulli: | 2x control. | |||||
| 18-06-2023 | pulli: | g-7|Z & g-7|1 trapped for control. 3rd chick in group, no view on code, but likely g-7|0. Fledged: 3 chicks | |||||
| 25-06-2023 | pulli: | 2 chicks g-7|Z and g-7|1 (caught from group of 3, maybe his other 2 brothers.) | |||||
below: Caspian Gull cachinnans 7|Z 3CY, April 23 2025, colony Lelystad, the Netherlands. Picture: Thijs Horst.
below: Caspian Gull cachinnans 7|Z 1CY, July 08 2023, Lelystad colony, the Netherlands. Picture: Thijs Horst & Mars Muusse.
below: Caspian Gull cachinnans 7|Z 1CY, June 25 2023, Lelystad colony, the Netherlands. Picture: Thijs Horst.
below: Caspian Gull cachinnans 7|Z 1CY, June 18 2023, Lelystad colony, the Netherlands. Picture: Thijs Horst & Mars Muusse.
below: Caspian Gull cachinnans 7|Z 1CY, May 27 2023, Lelystad colony, the Netherlands. Picture: Thijs Horst.
below: Caspian Gull cachinnans 7|Z 1CY, May 18 2023, Lelystad colony, the Netherlands. Picture: Thijs Horst.
