Larus cachinnans in the Netherlands

(last update: August 16, 2020)

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Herring Gull argenteus B / JV adult, 2025, Lelystad & Almere, the Netherlands. Picture: Thijs Horst.

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Tibia B/R-JV and metal NLA 5.641.914, ringed as breeding adult Larus argentatus on May 31 2025 at Lelystad, the Netherlands. Ringed by Roland-Jan Buijs ringing team (Mars Muusse / Thijs Horst / Fred Cottaar).

Recoveries:
04-06-2025 Almere (De Vaart), Flevoland, NL 5.224,00 N 514,00 E colourring read Thijs Horst
13-06-2025 Lelystad (Bataviahaven), Flevoland, NL 5.230,00 N 525,00 E colourring read Thijs Horst
14-06-2025 Lelystad (Bataviahaven), Flevoland, NL 5.230,00 N 525,00 E colourring read T. Horst & M. Muusse

Data for nest g-R|T & b/r-JV 2025.

2025 parent 1 parent 2 A_length A_width A_volume B_length B_width B_volume C_length C_width C_volume TOTAL NEST:
g-R|T & b/r-JV cach teus
dam: dam 1, blocks
location:
blocks north side, 1m above + sign on dam, 2 mtr E of nest 53.
parents: New, mixed couple. Both trapped in 2025: 4CY Caspian male is now g-R|T. Adult female Herring is now b/r-JV.
ringed:
date darvic metal location / nest# species sexe age wing mass head+ bill bill tarsus gonys greyscale
31-05-2025 b/r-JV 6254570 Nest with + on blocks dam 1 ZM F >4CY 407 730 112,6 50,8 65,2 18,3 5
31-05-2025 g-R|T 5641915 Nest with + on blocks dam 1 PONT M 4CY 459 1029 141 62,2 67 18,8 7
OBSERVATIONS:
31-05-2025 adult
Adult female trapped at nest, now b/r-JV and adult male g-R|T.
eggs 2x eggs.
14-06-2025 nest nest failed.

below: Herring Gull argenteus B / JV adult, June 04 2025, Almere - De Vaart, the Netherlands. Picture: Thijs Horst.

below: Herring Gull argenteus B / JV adult, May 31 2025, colony Lelystad, the Netherlands. Picture: Thijs Horst & Mars Muusse.

date darvic metal nest species sexe age wing mass head+ bill bill tarsus gonys barcode greyscale comments
31-5-2025 B/R-JV .5641914 Nest with + on blocks dam 1 ZM F >4CY 407 730 112,6 50,8 65,2 18,3 5   trapped by ringer.