Larus cachinnans in the Netherlands

(last update: August 16, 2020)

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

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Caspian Gull cachinnans F|D 1CY-2CY, May 2020 & May - July 2021, the Netherlands & July 2020, Suffolk, UK. Picture: Merijn Loeve, Brian Small, Eric Roeland, Naomi Huijg & Thijs Horst.

Chick from nest 32 - colony Lelystad, the Netherlands, ringed as pullus on May 21 2020. Nest data:

datum: egg no: width (mm) length (mm) volume (cm3):  water test on April 15th:  
07-05-2020 A 50,4 70,5 92,10 90 - floating, 5mm above surface 3 eggs in the nest. Male with sub-adult pattern.
07-05-2020 B 50,4 67,9 86,84 90 - floating, 3mm above surface  
07-05-2020 C 48,1 66,1 77,00 90 - floating, 5mm above surface
  sum nest: 255,95
21-05-2020 pulli Pullus ringed b[F|D]. One chick with mole as prey, otherwise empty nest.
         
02-06-2020 parents     Two partners at nest.

Blue bar tibia ring b[F|D], ID certain, both parents are Caspian Gull cachinnans. Ringed chick quickly after fledging reported from England by Brian Small.

below: Caspian Gull cachinnans F|D 2CY, July 21 2021, Scheveningen, the Netherlands. Picture: Naomi Huijg.

below: Caspian Gull cachinnans F|D 2CY, July 15 2021, Almere, the Netherlands. Picture: Eric Roeland.

below: Caspian Gull cachinnans F|D 2CY, July 06 2021, Almere, the Netherlands. Picture: Eric Roeland.

Probably a female.

below: Caspian Gull cachinnans F|D 2CY, May 04 2021, Almere, the Netherlands. Picture: Thijs Horst.

below: Caspian Gull cachinnans F|D 1CY, July 27 2020, Southwold, Suffolk, U.K. Picture: Brian Small.

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