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|C 1CY, May 21 2020, Lelystad, the Netherlands. Picture: Merijn Loeve.

Blue bar tibia ring b[F|C], ringed as pullus Larus cachinnans on May 21 2020 at nest 17 in colony Lelystad, the Netherlands.
ID certain, parents are Caspian Gull cachinnans.

datum: egg no: width (mm) length (mm) volume (cm3):  water test on April 15th:  
15-04-2020 A 53,3 73,1 104,56 30 - tip on bottom 3 eggs in the nest.
15-04-2020 B 50,7 68,3 88,40 10 - on bottom  
  C 51,2 73,7 97,28 40 - tip on bottom
  sum nest: 290,23
21-05-2020 pullus     Empty nest. One pullus found, ringed b[F|C].