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|2 1CY, May & September 2021, De Kreupel, the Netherlands & offshore Gulf of Biskay / Bask Country. Picture: Asier Aldalur & Leon Kelder.
Blue tibia ring b[D|2], ringed as pullus Larus cachinnans on May 20 2021 at nest L06 21 in colony De Kreupel, the Netherlands.
ID is uncertain: both parents are unknown. Still, image by Asier Aldalur from Bask Country shows a nice cachinnans.
| Date: | details: | |||||
| 23-4-2021 | 3 eggs in nest. | egg no: | width (mm): | length (mm): | volume (cm3): | |
| A egg | 49.8 | 73.4 | ||||
| B egg | 50.9 | 71.7 | ||||
| C egg | 51.4 | 72.1 | ||||
| Attempt to trap breeding adult. Failed. | ||||||
| 14-5-2021 | Could not relocate the nest. | |||||
| 20-5-2021 | 3 pulli in nest. | metal: | tibia: | mass (gr): | head + bill: | tarsus: |
| Prey: Roach 2x. | NLA 5.556.758 | b-D|2 | 132 | 58.3 | 35.1 | |
| https://waarneming.nl/observation/214710481/ | NLA 5.556.759 | b-D|3 | 87 | 54.0 | 36.1 | |
| NLA 5.556.760 | b-D|4 | 119 | 58.8 | 33.7 | ||
| 4-6-2021 | No chicks near nest. | |||||
| Prey: fresh Eel 2x. https://waarneming.nl/observation/216520181/ | ||||||
below: Caspian Gull cachinnans D|2 1CY, September 11 2021, offshore Gulf of Biskay / Bask Country. Picture: Asier Aldalur.
below: Caspian Gull cachinnans D|2 1CY, May 20 2021, De Kreupel - L, the Netherlands. Picture: Leon Kelder.
