Larus cachinnans in the Netherlands
(last update: August 16, 2020)
Caspian Gull cachinnans hybrid C|4 1CY-2CY, May 2024 - January 2025, the Netherlands & France. Picture: Thijs Horst & Merijn Loeve.
| You can participate in this project too! Please send in your observations of colour ringed birds to: ring@buijsecoconsult.nl |
Tibia ring G-C|4 and metal NLA 5.631.189, ringed as pullus Larus cachinnans on May 31 2024 in nest 026-2024 at Lelystad, the Netherlands. Ringed by Merijn Loeve (Roland-Jan Buijs ringing team).
Recoveries:
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
25-06-2024 Lelystad (Bataviahaven), Flevoland, NL 5.230,00 N 525,00 E colourring read T. Horst & M. Muusse
29-06-2024 Lelystad (Bataviahaven), Flevoland, NL 5.230,00 N 525,00 E colourring read Thijs Horst
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 | 71,1 | 47,7 | 81,45 | 74,3 | 49,1 | 90,19 | 73,6 | 49 | 88,98 | 260,62 | |||
| 026-2024 | # eggs | A-egg | hatch | # ringed chicks | # all chicks | # fledged chicks | comments | ||||||
| 3 | 15-4-2024 | 10-5-2024 | |||||||||||
| dam: | dam 1 blocks | ||||||||||||
| location: | Was nest 26 at blocks east side, now Blue Bucket, 3 mtr SE of Roodflapje, top of dam 1 | ||||||||||||
| parents? | New? | ||||||||||||
| ring pulli: | 14-May | ||||||||||||
| date | darvic | metal | location / nest# | species | sexe | age | wing | mass | head+ bill | bill | tarsus | gonys | greyscale |
| 14-05-2024 | .5631189 | 26 blauwe emmer | PONT | 1CY | 68 | ||||||||
| 14-05-2024 | .5631190 | 26 blauwe emmer | PONT | 1CY | 69 | ||||||||
| 31-05-2024 | g-C|4 | .5631189 | 26 | PONT | 1CY | CONTROLL | |||||||
| 31-05-2024 | g-C|5 | .5631190 | 26 | PONT | 1CY | CONTROLL | |||||||
| 04-06-2024 | g-C|4 | .5631189 | 26 | PONT | 1CY | 173 | 653 | 94,9 | CONTROLL | ||||
| 04-06-2024 | g-C|5 | .5631190 | 26 | PONT | 1CY | 175 | 738 | 98,0 | CONTROLL | ||||
| OBSERVATIONS: | |||||||||||||
| 21-04-2024 | eggs: | 3 eggs, measured. | |||||||||||
| nest: | Caspian Gull incubating. | ||||||||||||
| 07-05-2024 | eggs: | 3x. | |||||||||||
| 14-05-2024 | chicks: | 2x ringed, only metal. | |||||||||||
| adult: | Caspian Gull | ||||||||||||
| eggs: | 1x hatching | ||||||||||||
| 31-05-2024 | chicks: | 2x ringed, darvic added. | |||||||||||
| 04-06-2024 | chicks: | g-C|4 & g-C|5 present, measured. | |||||||||||
| food: | fish bolus by g-C|5 when processed = Roach. | ||||||||||||
| 18-06-2024 | chicks: | g-C|4, g-C|5 present. | |||||||||||
| adults: | 1x Caspian Gull. | ||||||||||||
below: Caspian Gull cachinnans hybrid C|4 2CY, January 2025, France. Picture: .
Like sibbling g-C|5, this bird also with hybrid traits, most prominent the head.
below: Caspian Gull cachinnans hybrid C|4 1CY, June 29 2024, Lelystad colony, the Netherlands. Picture: Thijs Horst.
Chicks g-C|4 & g-C|5. Dark chicks, suggesting hybrid origin.
below: Caspian Gull cachinnans hybrid C|4 1CY, June 18 2024, Lelystad colony, the Netherlands. Picture: Thijs Horst & Mars Muusse.
below: Caspian Gull cachinnans hybrid C|4 1CY, May 31 2024, Lelystad colony, the Netherlands. Picture: Thijs Horst & Merijn Loeve.
| date | darvic | metal | location / nest# | species | sexe | age | wing | mass |
| 14-05-2024 | .5631189 | nest 26 blauwe emmer | PONT | 1CY | 68 | |||
| 14-05-2024 | .5631190 | nest 26 blauwe emmer | PONT | 1CY | 69 | |||
| 31-05-2024 | g-C|4 | .5631189 | 26 | PONT | 1CY | |||
| 31-05-2024 | g-C|5 | .5631190 | 26 | PONT | 1CY |
