Larus cachinnans in the Netherlands
(last update: August 16, 2020)
Caspian Gull cachinnans A|F adult, 2024 - 2025, the Netherlands. Picture: Thijs Horst & Mars Muusse.
| You can participate in this project too! Please send in your observations of colour ringed birds to: ring@buijsecoconsult.nl |
Tibia ring G-A|F and metal NLA 5.625.295, ringed as breeding adult Larus cachinnans on April 30 2024 in nest 265-2024 at Lelystad, the Netherlands. Ringed by Mars Muusse (Roland-Jan Buijs ringing team).
Recoveries:
02-05-2024 Lelystad (Bataviahaven), Flevoland, NL 5.230,00 N 525,00 E colourring read T. Horst & M. Muusse
04-06-2024 Lelystad (Bataviahaven), Flevoland, NL 5.230,00 N 525,00 E colourring read T. Horst & M. Muusse
18-06-2024 Lelystad (Bataviahaven), Flevoland, NL 5.230,00 N 525,00 E colourring read T. Horst & M. Muusse
24-06-2024 Lelystad (Bataviahaven), Flevoland, NL 5.230,00 N 525,00 E colourring read Thijs Horst
29-06-2024 Lelystad (Bataviahaven), Flevoland, NL 5.230,00 N 525,00 E colourring read Thijs Horst
20-11-2024 Almere (De Vaart), Flevoland, NL 5.224,00 N 514,00 E colourring read Thijs Horst
29-11-2024 Oss (Vuiloverslag), Noord-Brabant, NL 5.147,00 N 532,00 E colourring read Tim Raats
03-12-2024 Oss (Vuiloverslag), Noord-Brabant, NL 5.147,00 N 532,00 E colourring read Tim Raats
20-03-2025 Lelystad (Bataviahaven), Flevoland, NL 5.230,00 N 525,00 E colourring read Thijs Horst
25-03-2025 Almere (De Vaart), Flevoland, NL 5.224,00 N 514,00 E colourring read T. Horst & M. Muusse
25-03-2025 Lelystad (Bataviahaven), Flevoland, NL 5.230,00 N 525,00 E colourring read T. Horst & M. Muusse
01-04-2025 Lelystad (Bataviahaven), Flevoland, NL 5.230,00 N 525,00 E colourring read T. Horst & M. Muusse
04-04-2025 Lelystad (Bataviahaven), Flevoland, NL 5.230,00 N 525,00 E colourring read T. Horst & M. Muusse
12-04-2025 Lelystad (Bataviahaven), Flevoland, NL 5.230,00 N 525,00 E colourring read Thijs Horst
08-05-2025 Lelystad (Bataviahaven), Flevoland, NL 5.230,00 N 525,00 E colourring read Thijs Horst
25-05-2025 Lelystad (Bataviahaven), Flevoland, NL 5.230,00 N 525,00 E colourring read T. Horst & M. Muusse
30-05-2025 Lelystad (Bataviahaven), Flevoland, NL 5.230,00 N 525,00 E colourring read T. Horst & M. Muusse
29-06-2025 Lelystad (Bataviahaven), Flevoland, NL 5.230,00 N 525,00 E colourring read T. Horst & M. Muusse
09-07-2025 Lelystad (Bataviahaven), Flevoland, NL 5.230,00 N 525,00 E colourring read T. Horst & M. Muusse
Visits and data 2024
| NEST code | parent 1 | parent 2 | A_length | A_width | A_volume | B_length | B_width | B_volume | C_length | C_width | C_volume | TOTAL NEST: | |
| cach | herring | 73,6 | 49,3 | 90,07 | 75 | 49,5 | 92,53 | 0,00 | 182,60 | ||||
| 265-2024 | # eggs | A-egg | hatch | # ringed chicks | # all chicks | # fledged chicks | comments | ||||||
| 17-4-2024 | 15-5-2024 | ||||||||||||
| dam: | dam 2 east at soos | ||||||||||||
| location: | near Blackberry, close to XCHP, blue rope on north side | ||||||||||||
| parents? | New nest. | ||||||||||||
| ring pulli: | 21-May | ||||||||||||
| date | darvic | metal | location / nest# | species | sexe | age | wing | mass | head+ bill | bill | tarsus | gonys | greyscale | 30-4-2024 | g-A|F | .5625295 | Dam 2 soos nest | PONT | M | >4CY | 469 | 1085 | 134 | 56,9 | 73,9 | 20,1 | 6 |
| OBSERVATIONS: | |||||||||||||
| 21-4-2024 | eggs: | 2 eggs, measured. | |||||||||||
| adults: | mixed pair? | ||||||||||||
| 23-4-2024 | adults: | mixed pair: male is Caspian Gull, female is Herring Gull. Left wing P10 with white island. | |||||||||||
| 26-4-2024 | eggs: | 2 eggs. | |||||||||||
| 30-4-2024 | adults: | trapped adult male Caspian Gull at nest, incubating 2 eggs. | |||||||||||
| 02-5-2024 | adults: | mixed pair. | |||||||||||
Visits and data 2025.
| 2025 | parent 1 | parent 2 | A_length | A_width | A_volume | B_length | B_width | B_volume | C_length | C_width | C_volume | TOTAL NEST: | # eggs | |
| g-A|F & b/r-JA (265) | cach type | teus | 68,7 | 49,6 | 65 | 48,5 | 64,5 | 58,8 | 3 | |||||
| dam: | dam 2 east at soos
|
|||||||||||||
| location: | is g-A|F-2024: 20 meters east of XCHP. Next to Blackberries, (dam 2 soos)
|
|||||||||||||
| parents: | same as 2024: male g-A|F cach type and female Herring br-JA. | |||||||||||||
| ring pulli: | ||||||||||||||
| ringed: | darvic | metal | location / nest# | species | sexe | age | wing | mass | head+ bill | bill | tarsus | gonys | greyscale | |
| 23-04-2025 | b/r-JA | 6254551 | Nest g-A|F | ZM | F | >4CY | 424 | 980 | 123,6 | 50,9 | 66,5 | 19,2 | 6 | |
| 25-05-2025 | g-T|1 | 5641855 | g-A|F & b/r-JA | HYBRID | pullus | 237 | 72,5 | |||||||
| 31-05-2025 | g-R|2 | 5641927 | g-A|F & b/r-JA | HYBRID | pullus | 343 | ||||||||
| OBSERVATIONS: | ||||||||||||||
| 25-03-2025 | adult | g-A|F & partner at location 2024 | ||||||||||||
| 01-04 | adult | g-A|F & partner at location 2024
|
||||||||||||
| 04-04 | adult | g-A|F & partner at location 2024
|
||||||||||||
| 21-04 | eggs | 3x eggs measured
|
||||||||||||
| 23-04 | adult | trapped female HG incubating 3 eggs
|
||||||||||||
| 28-04 | nest | b/r-JA present | ||||||||||||
| 08-05 | adult | both partners present
|
||||||||||||
| 25-05 | chick | 1 chick ringed, where are other two?
|
||||||||||||
| 31-05 | chicks | 1 chick ringed, g-R|2
|
||||||||||||
below: Caspian Gull cachinnans A|F adult, December 05 2025, Almere - De Vaart, the Netherlands. Picture: Thijs Horst.
Winter head with streaking concentrated on ear coverts suggesting this not a pure Caspian.
.JPG)
below: Caspian Gull cachinnans A|F adult, December 02 2025, Almere - De Vaart, the Netherlands. Picture: Thijs Horst.
below: Caspian Gull cachinnans A|F adult, July 09 2025, colony Lelystad, the Netherlands. Picture: Thijs Horst.
.JPG)
below: Caspian Gull cachinnans A|F adult, May 30 2025, colony Lelystad, the Netherlands. Picture: Thijs Horst & Mars Muusse.
.JPG)
.JPG)
below: Caspian Gull cachinnans A|F adult, May 25 2025, colony Lelystad, the Netherlands. Picture: Thijs Horst & Mars Muusse.
below: Caspian Gull cachinnans A|F adult, May 08 2025, colony Lelystad, the Netherlands. Picture: Thijs Horst & Mars Muusse.
below: Caspian Gull cachinnans A|F adult, April 04 2025, colony Lelystad, the Netherlands. Picture: Thijs Horst & Mars Muusse.
below: Caspian Gull cachinnans A|F adult, April 01 2025, colony Lelystad, the Netherlands. Picture: Mars Muusse.
below: Caspian Gull cachinnans A|F adult, March 25 2025, colony Lelystad & Almere - De Vaart, the Netherlands. Picture: Thijs Horst & Mars Muusse.
below: Caspian Gull cachinnans A|F adult, November 20 2024, Almere - De Vaart, the Netherlands. Picture: Thijs Horst.
Head not a good match to cachinnans.
below: Caspian Gull cachinnans A|F adult, June 04 2024, Lelystad colony, the Netherlands. Picture: Thijs Horst.
below: Caspian Gull cachinnans A|F adult, April 30 2024, Lelystad colony, the Netherlands. Picture: Thijs Horst & Mars Muusse.
| date | darvic | metal | location / nest# | species | sexe | age | wing | mass | head+ bill | bill | tarsus | gonys | greyscale |
| 30-4-2024 | g-A|F | .5625295 | Dam 2 soos nest | PONT | M | >4CY | 469 | 1085 | 134 | 56,9 | 73,9 | 20,1 | 6 |
