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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Caspian Gull cachinnans hybrid 1:P 1CY, 2026, colony Lelystad, the Netherlands.

You can participate in this project too! Please send in your observations of colour ringed birds to: ring@buijsecoconsult.nl

Tibia Y-1:P and metal 5.646.745, ringed as pullus Larus cachinnans on May 19 2026 at nest g-A|F & b/r-JA in colony Lelystad, the Netherlands. Ringer: Roland-Jan Buijs ringing team.

Recoveries:
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Visits and data nest g-A|F & b/r-JA 2026.

2026 parent 1 parent 2 A_length A_width A_volume B_length B_width B_volume C_length C_width C_volume
TOTAL NEST:
 # eggs
g-A|F & b/r-JA cach teus 69,0 50,0 69,3 49,4 68,4 50,0 3
 
ringed:
date darvic metal location / nest# species sexe age wing mass head+ bill bill tarsus gonys greyscale
19-05-2026 Y-1:M 5.646.743 G-A|F & B/R-JA HYBRID pullus 89  
19-05-2026 Y-1:N 5.646.744 G-A|F & B/R-JA HYBRID pullus 81  
19-05-2026 Y-1:P 5.646.745 G-A|F & B/R-JA HYBRID pullus 40  
               
OBSERVATIONS:
22-04-2026 nest 3 eggs, measured.
26-04-2026 nest 3 eggs.
  parents B/R-JA.
19-05-2026 pullus 3x pullus ringed.