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 8|G 1CY, May - June 2023, Lelystad colony, the Netherlands. Picture: Thijs Horst & Mars Muusse.

Tibia G-8|G and metal NLA 5.625.254, ringed as pullus Larus argentatus on May 27 2023 in nest 256 at Lelystad, the Netherlands (5230.00 N 525.00 E). Ringer Merijn Loeve / Roland-Jan Buijs ringing team.

egg sizes & volume 2023
SPECIES NEST A_length A_width A_volume B_length B_width B_volume C_length C_width C_volume TOTAL NEST: known parents?
teus x ? 256-2023 69,7 50,6 89,85 69,7 48,4 82,21 66 47,2 74,03 246,10
ring pulli: May 25 laying A egg: April 20 hatch A egg: May 18
     
catch: date: metal: darvic: mass: wing: head+bill:
pullus 18-05-2023 1 chick, hatched today
pullus 27-05-2023 5.625.254 g-8|G 200 2 chicks ringed, 1x rotten egg
pullus 27-05-2023 5.625.255 g-8|F 235 2 chicks ringed, 1x rotten egg
pullus 25-06-2023 g-8|G 772 294 100,8
   
256-2023 NEW NEST
dam: dam 2 west
location: 8 mtr SE of lighthouse. Below nest X60J-2023. Code Z sprayed on block.
breeders: teus x ?
OBSERVATIONS: Water test:
26-4-2023 nest: 3 eggs. Measured & water test: A 30 - tip bottom
B 40 - tip bottom
27-04-2023 adult: breeding ad Herring C 30 - tip bottom
18-05-2023 pulli: 1x very small chick = 1 day old.
27-05-2023 pulli: g-8|G 2 chicks ringed, 1x rotten egg
27-05-2023 pulli: g-8|F
25-06-2023 pulli: g-8|G caught and meassured, fomitted zander. Together with r-78 (nest 229) and 1 unringed chick.

below: Herring Gull argenteus 8|G 1CY, June 25 2023, Lelystad colony, the Netherlands. Picture: Thijs Horst & Mars Muusse.

below: Herring Gull argenteus 8|G 1CY, May 27 2023, Lelystad colony, the Netherlands. Picture: Thijs Horst & Mars Muusse.