Larus cachinnans in the Netherlands
(last update: August 16, 2020)
Albert de Jong
Leon Kelder
Roland-Jan Buijs
Thijs Horst
Merijn Loeve
Mars Muusse
Caspian Gull cachinnans D|+ 1CY, May & October 2021, De Kreupel & Schellinkhout, the Netherlands. Picture: Leon Kelder.
Blue tibia ring r[D|+], ringed as pullus Larus cachinnans on May 20 2021 at nest KA 21 in colony De Kreupel, the Netherlands.
ID is uncertain: father is Caspian Gull cachinnans (ringed r-K.A), mother is unknown.
below: Caspian Gull cachinnans D|+ 1CY, October 19 2021, Schellinkhout- Zuiderdijk, the Netherlands. Picture: Leon Kelder.
See: WAARNEMING.NL.
below: Caspian Gull cachinnans D|+ 1CY, May 20 2021, De Kreupel - M, the Netherlands. Picture: Leon Kelder.
| Date: | details: | |||||
| 9-4-2021 | 2 eggs in nest. | egg no: | width (mm): | length (mm): | volume (cm3): | |
| https://waarneming.nl/observation/210427028/ | A egg | 50.8 | 67.0 | |||
| B egg | 52.1 | 70.8 | ||||
| 23-4-2021 | 3 eggs in nest. | egg no: | width (mm): | length (mm): | volume (cm3): | |
| https://waarneming.nl/observation/210427028/ | A egg | 51.0 | 67.1 | |||
| B egg | 52.4 | 70.8 | ||||
| 52.1 | 68.9 | |||||
| Attempt to trap breeding adult. Adult trapped. | metal: | tibia: | wing: | head + bill: | bill: | |
| Adult male Caspian Gull cachinnans. | NLA 6.211.436 | Red-K.A | 461 | 132.0 | 63.0 | |
| mass: | moult score: | bill height: | grey scale: | Tarsus: & Swob: | ||
| -- | 10x0 | 19.3 | 6 | 73.0 & 1078 | ||
| 14-5-2021 | 2 pulli in nest. | metal: | tibia: | mass (gr): | head + bill: | tarsus: |
| https://waarneming.nl/observation/214663945/ | NLA 5.556.734 | r-K.0 | 216 | 69.3 | 40.3 | |
| NLA 5.556.735 | r-K.1 | 169 | 62.2 | 35.8 | ||
| 20-5-2021 | 3 pulli in direct surrounding of nest. | metal: | tibia: | mass (gr): | head + bill: | wing: |
| https://waarneming.nl/observation/214710893/ | NLA 5.556.734 | r-K.0 | 531 | 85.9 | 86.0 | |
| NLA 5.556.735 | r-K.1 | 415 | 77.7 | 76.0 | ||
| NLA 5.556.762 | b-D|+ | 513 | 86.2 | 84.5 | ||