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 NLA 6.525.186 1CY, May 30 2022, Lelystad, the Netherlands. Picture: Thijs Horst & Mars Muusse.

Metal NLA 5.625.186, ringed as pullus Larus argentatus at nest r-6.C 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, including adult r[6.C].

date            
22-05-2022 nest with 3 eggs, code '246Z', for Herring Gull control group. Herring Gull trapped at nest.
  metal: darvic: wing: Head + Bill: Gonys: Mass: Greytone:
  NLA 5625154 r-6.C 422 116,2 18,9 866 4.0
30-05-2022 2 chicks in nest. Both too small for darvic. Only metal rings. (<3 days age)
  NLA .5625185
  NLA .5625186
21-06-2022 pullus NLA .5625185 dead in nest. No sign of other metal ringed bird NLA .5625186
28-06-2022 r-6C adult Herring Gull photographed at dump Almere - De Vaart.

below: Herring Gull argenteus NLA 6.525.186 1CY, May 30 2022, Lelystad, the Netherlands. Picture: Mars Muusse.

NLA[6.525.186] argenteus from nest r[6.C]. Picture: May 30th, 2022. No observations since.
Sibling NLA[5.625.185] dead in nest in June.