Larus cachinnans in the Netherlands

(last update: August 16, 2020)

Coordinator:
Albert de Jong
Merijn Loeve
Roland-Jan Buijs
Leon Kelder
Mars Muusse

Home

Caspian Gull cachinnans F|2 1CY, May & August 2020, the Netherlands & October 2020, Basque Country. Picture: Merijn Loeve, Xabier Saralegi & Eric Roeland.

Black bar tibia ring n[F|2], ringed as pullus Larus cachinnans on May 21 2020 at nest 021 in colony Lelystad, the Netherlands.
ID certain, Caspian Gull cachinnans; one partner with sub-adult patterns.
Both ringed chicks quickly after fledging reported from abroad.
datum: egg no: width (mm) length (mm) volume (cm3):  water test on April 15th:  
27-04-2020 A 49,6 68,9 85,34578 30 - angled, tip on bottom 3 eggs in the nest. Male with sub-adult pattern.
27-04-2020 B 49,8 70 87,40901 60 - angled, tip on bottom  
27-04-2020 C 50,1 66,6 84,16842 35 - angled, tip on bottom
  sum nest: 256,9232
21-05-2020 pulli     Two chicks, ringed n[F|2] & n[F|4]. C-egg is unfertile, taken from nest.
         
02-06-2020 pulli     Two partners at nest.

Caspian Gull cachinnans F|2 1CY, October 02 2020, Urumea river - San Sebastian  (43°18'29.5"N 1°58'36.2"W), Basque Country. Picture: Xabier Saralegi.

Caspian Gull cachinnans F|2 1CY, August 07 2020, Lelystad, the Netherlands. Picture: Eric Roeland.

After fledging, on it's way south, but now only 10 km's from the colony.

Caspian Gull cachinnans F|2 1CY, May 21 2020, Lelystad, the Netherlands. Picture: Merijn Loeve.