Larus cachinnans in the Netherlands
(last update: August 16, 2020)
Caspian Gull cachinnans 8.= 1CY-2CY, May - July 2024, De Kreupel & Lelystad colonies, the Netherlands. Picture: Thijs Horst & Mars Muusse.
Tibia ring R-8.= and metal NLA 5.556.469, ringed as pullus Larus cachinnans on May 11 2023 in nest 60 at Lelystad, the Netherlands. Ringed by Roland-Jan Buijs ringing team.
ID certain for nest 60, both parents are Caspian Gull cachinnans.
Recoveries:
11-05-2023 Lelystad (Bataviahaven), Flevoland, NL 5.230,00 N 525,00 E colourring read Thijs Horst
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
08-07-2023 Lelystad (Bataviahaven), Flevoland, NL 5.230,00 N 525,00 E colourring read Thijs Horst
30-07-2024 IJsselmeer (De Kreupel), Noord-Holland, NL 5.247,00 N 513,00 E colourring read J. van Assema & T. Horst
Data for 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: | known parents? |
| cach x cach | 60-2023 | 68,2 | 51 | 89,31 | 69,9 | 51 | 91,54 | 66,2 | 50,2 | 84,00 | 264,85 | same as 2022 |
| ring pulli: 11-mei | laying A egg: 6-apr | hatch A egg: 4-mei | ||||||||||
| catch: | date: | metal: | darvic: | mass: | wing: | head+bill: | bill: | gonys: | greytone: | tarsus kor: | ||
| adult | 03-5-2023 | NLA 6214901 | R-F.7 | 810? | 447 | 125,6 | 57,5 | 18 | 6 | female cach | ||
| pullus | 11-5-2023 | NLA 5556469 | R-8.= | |||||||||
| pullus | 11-5-2023 | NLA 5556470 | R-8.T | |||||||||
| pullus | 11-5-2023 | NLA 5556471 | R-8.C | |||||||||
| pullus | 27-5-2023 | NLA 5556469 | R-8.= | 872 | 109,3 | 45,8 | 14 | 72,8 | ||||
| 60-2023 | ||
| dam: | dam 1 west | |
| location: | Is nest 60-2021/22. From cluster 60-62-63. | |
| breeders: | cach x cach | |
| OBSERVATIONS: | ||
| 09-04-2023 | nest: | 2 eggs measured. No watertest, ring chicks in 1st session. |
| 22-04-2023 | nest: | 3 eggs measured. |
| 03-05-2023 | adult: | Female partner ringed R-F.7. |
| 11-05-2023 | pulli: | 3 chicks ringed. |
| 13-05-2023 | adult: | both parents are cach. |
| 18-05-2023 | pulli: | 3 chicks present. |
| 27-05-2023 | pulli: | 1x control chick. |
| 18-06-2023 | adult: | R-F7 guarding juveniles. |
| pulli: | R-8= & R-8C present at water. At least 2x fledged. | |
| 25-06-2023 | pulli: | R-8=, R-8C and R-F7 (mother) present. |
below: Caspian Gull cachinnans 8.= 2CY, July 30 2024, colony De Kreupel, the Netherlands. Picture: Thijs Horst.
below: Caspian Gull cachinnans 8.= 1CY, July 08 2023, Lelystad colony, the Netherlands. Picture: Thijs Horst & Mars Muusse.
below: Caspian Gull cachinnans 8.= 1CY, June 25 2023, Lelystad colony, the Netherlands. Picture: Thijs Horst & Mars Muusse.
below: Caspian Gull cachinnans 8.= 1CY, June 18 2023, Lelystad colony, the Netherlands. Picture: Thijs Horst & Mars Muusse.
below: Caspian Gull cachinnans 8.= 1CY, May 18 2023, Lelystad colony, the Netherlands. Picture: Thijs Horst.
below: Caspian Gull cachinnans 8.= 1CY, May 11 2023, Lelystad colony, the Netherlands. Picture: Thijs Horst.
