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 6.+ 1CY, May - June 2022, Lelystad, the Netherlands. Picture: Thijs Horst & Mars Muusse.

Red tibia ring r[6.+] and metal NLA 5.625.180, ringed as pullus Larus argentatus at nest 118Z 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.

27-Apr-22 3 eggs A egg 68 47,9 tip bottom - 0 gr
B egg 71 49,8 tip bottom - 20 gr
C egg 69 51,1 tip bottom - 20 gr
01-May-22 adult breeding
04-May-22 3 eggs 2 adults are Herring Gull.
09-May-22 3 eggs
17-May-22 3 eggs
metal darvic mass wing age
22-May-22 pullus 5625148 - 116 33 3 days
pullus 5625149 - 64 27 2 days
metal darvic mass wing H+B Bill
30-May-22 pullus 5625149 r-69 287 45 68,8 24,5
pullus 5625180 r-6+ 230 42 65,7 22,4
17-Jun-22 adult present
    ring mass H+B Bill Tarsus Wing
21-Jun-22 pullus 5625148 869 117,3 41,7 70 270
pullus r-6.+ 635 98 38,9 68,6 207

below: Herring Gull argenteus 6.+ 1CY, June 21 2022, Lelystad, the Netherlands. Picture: Thijs Horst & Mars Muusse.

r[6.+] argenteus from nest 118Z. Picture: June 21st, 2022.
r[6.+] & sibling NLA5625148 fledged. Sibling r[6.9] ringed on May 30th. No observations since.

below: Herring Gull argenteus 6.+ 1CY, May 30 2022, Lelystad, the Netherlands. Picture: Mars Muusse.