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 FW 1CY-4CY, May 2021 - August 2024, De Kreupel - D, the Netherlands. Picture: Leon Kelder & Thijs Horst.
Pale blue tibia ring p[FW] and metal NLA 5.556.718, ringed as pullus on May 14 2021 at nest D02 21 in colony De Kreupel island D, the Netherlands. Ringer: Leon Kelder.
ID uncertain: 1 parent is Caspian Gull cachinnans, other parent is unknown.
Recoveries:
20-05-2021 IJsselmeer (De Kreupel), Noord-Holland, NL 5.247,00 N 513,00 E captured by ringer Leon Kelder
11-07-2024 IJsselmeer (De Kreupel), Noord-Holland, NL 5.247,00 N 513,00 E colourring read Leon Kelder
28-07-2024 IJsselmeer (De Kreupel), Noord-Holland, NL 5.247,00 N 513,00 E colourring read T. Horst & M. Muusse
30-07-2024 IJsselmeer (De Kreupel), Noord-Holland, NL 5.247,00 N 513,00 E colourring read J. van Assema & T. Horst
05-08-2024 IJsselmeer (De Kreupel), Noord-Holland, NL 5.247,00 N 513,00 E colourring read T. Horst, M. Muusse & T. Muusse
Data for 2021:
| Date: | details: | ||||||
| 9-4-2021 | 1 egg in nest. | egg no: | width (mm): | length (mm): | volume (cm3): | ||
| https://waarneming.nl/observation/210431375/ | A egg | 51.2 | 73.5 | ||||
| 23-4-2021 | 3 eggs in nest. | egg no: | width (mm): | length (mm): | volume (cm3): | ||
| A egg | 51.3 | 73.7 | |||||
| B egg | 50.8 | 74.4 | |||||
| C egg | 49.1 | 71.1 | |||||
| metal: | tibia: | wing: | head + bill: | bill: | |||
| Adult trapped at nest: Caspian Gull. | NLA 6.211.441 | Red-K.F | 484.0 | 138.3 | 67.3 | ||
| mass: | tarsus: | moult score: | bill height: | grey scale | Swob | ||
| 1095 | 74.5 | 10x0 | 20.0 | 6.5 | 1082 | ||
| 14-5-2021 | 3 chicks in nest. | metal: | tibia: | mass (gr): | head + bill: | tarsus: | |
| https://waarneming.nl/observation/214662455/ | NLA 5.556.716 | Pale FU | 126 | 57.4 | 33.1 | ||
| NLA 5.556.717 | Pale FV | 185 | 63.5 | 38.6 | |||
| NLA 5.556.718 | Pale FW | 174 | 62.7 | 37.9 | |||
| 20-5-2021 | 3 chicks in nest. | metal: | tibia: | mass (gr): | head + bill: | wing: | |
| NLA 5.556.716 | Pale FU | 335 | 73.5 | 65.5 | |||
| NLA 5.556.717 | Pale FV | 466 | 81.8 | 77.0 | |||
| NLA 5.556.718 | Pale FW | 430 | 79.8 | 78.5 | |||
below: Caspian Gull cachinnans FW 4CY, August 05 2024, colony De Kreupel, the Netherlands. Picture: Thijs Horst.
below: Caspian Gull cachinnans FW 4CY, July 28 2024, colony De Kreupel, the Netherlands. Picture: Thijs Horst & Mars Muusse.
below: Caspian Gull cachinnans FW 1CY, May 14 2021, De Kreupel - D, the Netherlands. Picture: Leon Kelder.
