Larus cachinnans in the Netherlands

(last update: August 16, 2020)

Coordinators:
Albert de Jong
Leon Kelder
Roland-Jan Buijs
Thijs Horst
Merijn Loeve
Mars Muusse

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Herring Gull argenteus 7.C 1CY, May - July 2022, Lelystad, the Netherlands. Picture: Thijs Horst & Mars Muusse.

Red tibia ring r[7.C] and metal NLA 5.625.184, ringed as pullus Larus argentatus at nest 128Z on May 30 2022 in colony Lelystad, the Netherlands. Ringer: Roland-Jan Buijs ringing team.
ID certain in 2022: both parents are adult Herring Gull argenteus.

date:              
  egg no: width (mm): length (mm): volume (cm3):  water test    
27-04-2022 A-egg 49,7 73,5 -- tip bottom - 20 gr  
  B-egg 51,1 73,4   tip bottom - 0 gr
  C-egg 48,8 67,8 -- tip bottom - 0 gr
sum nest: --
04-05-2022 3 eggs  
09-05-2022 3 eggs
17-05-2022 3 eggs      
22-05-2022 C egg hatching, A & B chicks out of egg.    
30-05-2022 metal darvic mass wing H+B bill  
.5625184 r-7.C 329 56 71,4 25,3  
12-07-2022 picture of r-7C.
17-07-2022 picture of r-7C.

below: Herring Gull argenteus 7.C 1CY, July 12 2022, Lelystad, the Netherlands. Picture: Thijs Horst & Mars Muusse.

below: Herring Gull argenteus 7.C 1CY, May 30 2022, Lelystad, the Netherlands. Picture: Mars Muusse.

r[7.C] argenteus from nest 128. Picture: May 30th, 2022.
Ringed May 30th. No observations since. No confirmation on 2 other eggs.