Larus cachinnans in the Netherlands
(last update: August 16, 2020)
Albert de Jong
Merijn Loeve
Roland-Jan Buijs
Thijs Horst
Leon Kelder
Mars Muusse
Caspian Gull cachinnans 5.H 1CY-2CY, May 2022 & March 2023, Lelystad, the Netherlands. Picture: Eric Roeland & Mars Muusse.
Red tibia ring r[5.H] and metal NLA 5.625.107, ringed as pullus Larus cachinnans at nest 108 on May 17 2022 in colony Lelystad, the Netherlands. Ringer: Herman Bouman / Albert de Jong.
ID certain in 2022: both immature (4CY) cachinnans, one trapped at the nest and ringed r[C.S].
Recoveries:
31-03-2023 Almere (De Vaart), Flevoland, NL 5.224,00 N 514,00 E colourring read Eric Roeland
27-04-2023 Almere (De Vaart), Flevoland, NL 5.224,00 N 514,00 E colourring read Eric Roeland
03-05-2023 Lelystad (Bataviahaven), Flevoland, NL 5.230,00 N 525,00 E colourring read Thijs Horst
04-05-2023 Almere (De Vaart), Flevoland, NL 5.224,00 N 514,00 E colourring read Thijs Horst
08-07-2023 IJsselmeer (De Kreupel), Noord-Holland, NL 5.247,00 N 513,00 E colourring read Leon Kelder
18-02-2024 Almere (De Vaart), Flevoland, NL 5.224,00 N 514,00 E colourring read Eric Roeland
08-06-2024 IJsselmeer (De Kreupel), Noord-Holland, NL 5.247,00 N 513,00 E colourring read Leon Kelder
28-06-2024 IJsselmeer (De Kreupel), Noord-Holland, NL 5.247,00 N 513,00 E colourring read Leon Kelder
04-07-2024 IJsselmeer (De Kreupel), Noord-Holland, NL 5.247,00 N 513,00 E colourring read Leon Kelder
22-11-2024 Oss (Vuiloverslag), Noord-Brabant, NL 5.147,00 N 532,00 E colourring read Jaap van der Linden
Visits and data:
| date: | |||||||
| 11-04-2022 | nest ready. Still empty. | ||||||
| 12-04-2022 | 2 birds at nest site. | ||||||
| egg no: | width (mm): | length (mm): | volume (cm3): | water test | |||
| 15-04-2022 | A | 48,1 | 70,9 | -- | -- | ||
| 27-04-2022 | A | float - 1 mm | |||||
| 27-04-2022 | B | 67,9 | 47,7 | -- | 80 - tip on bottom | ||
| sum nest: | -- | ||||||
| 04-05-2022 | 4CY at nest. | ||||||
| 09-05-2022 | 4CY trapped at nest. Ring metal = NLA 5.625.067. | ||||||
| darvic | gonys | wing | tarsus | head+bill | bill | mass | |
| r[C.S] | 18,0 | 446 | 69,2 | 127,2 | 59,1 | 1025 gr. | |
| 17-05-2022 | metal | darvic | mass | ||||
| pullus | NLA 5.625.106 | r-5.G | 151 | ||||
| pullus | NLA 5.625.107 | r-5.H | 89 | ||||
| prey | Roach & Eel (50 cm). | ||||||
below: Caspian Gull cachinnans 5.H 2CY, March 31 2023, Almere, the Netherlands. Picture: Eric Roeland.
below: Caspian Gull cachinnans 5.H 1CY, May 17 2022, Lelystad, the Netherlands. Picture: Mars Muusse.
r[5.H] cachinnans from nest 108 with mother r[C.S]. Picture: May 17th, 2022.
Sibling is r[5.G], which was ringed on May 17th and not recorded since.
