Larus cachinnans in the Netherlands

(last update: August 16, 2020)

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Caspian Gull cachinnans 8|M 1CY, May 2023, Lelystad colony, the Netherlands. Picture: Thijs Horst & Mars Muusse.

Tibia ring R-72 and metal NLA 5.625.199, ringed as pullus Larus cachinnans on May 11 2023 in nest 204 at Lelystad, the Netherlands. Ringed by 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?
cach x cach 204-2023 72,5 52,3 99,85 70,6 52,3 97,23 67,3 51,5 89,87 286,95 same as 2022
ring pulli: May 10 laying A egg: April 05 hatch A egg: May 03
     
catch: date: metal: darvic: mass: wing: head+bill:
Pullus 11-5-2023 5.625.199 r-72 - small chick, food is roach
Pullus 11-5-2023 5.625.200 r-73 - small chick
Pullus 27-5-2023 5.625.199 r-72 751
Pullus 27-5-2023 5.625.200 r-73 455
Pullus 27-5-2023 5.625.261 g-8|M 480
 
204-2023
dam: dam 2 west
location: Is nest 204-2022. East nest of 203-204. 13 mtr E of lighthouse.
breeders: cach x cach
OBSERVATIONS:
9-4-2023 nest: 3 eggs measured. No watertest, ring chicks in 1st session.
26-4-2023 nest: 3 eggs.
11-5-2023 pulli 2 chicks ringed, 3rd chick?
27-5-2023 pulli 1x extra chick ringed; 3x chicks measured.

below: Caspian Gull cachinnans 8|M 1CY, May 27 2023, Lelystad colony, the Netherlands. Picture: Thijs Horst & Mars Muusse.