Larus cachinnans in the Netherlands

(last update: August 16, 2020)

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Caspian Gull cachinnans hybrid 0:X adult, 2026, colony Lelystad, the Netherlands. Picture: Mars Muusse & Thijs Horst.

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

Tibia Y-0:X and metal 5.646.671, ringed as adult female hybrid Larus cachinnans on May 05 2026 in colony Lelystad, the Netherlands. Ringer: Roland-Jan Buijs ringing team.

Recoveries:
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Visits and data nest r-5X & y-0:X (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
r-5X & y-0:X cach hybrid 74,1 47,3   71,0 46,9   68,0 47,0  
 
ringed:
date darvic metal location / nest# species sexe age wing tarsus head+ bill bill gonys mass  
05-05-2026 Y-0:X 5.646.671 nest r-5X HYBRID F >4CY 417 67,7 119,7 54 18,8 822  
               
OBSERVATIONS:
22-04-2026 nest 1 egg, measured.
26-04-2026 nest 3 eggs, measured.
  parents 1x unringed hybrid Caspian Gull.
05-05-2026 parents trapped unringed hybrid Caspian Gull, now y-0:X.
10-05-2026 nest 3 eggs.
     
     

below: Caspian Gull cachinnans hybrid 0:X adult, May 05 2026, colony Lelystad, the Netherlands. Picture: Mars Muusse & Thijs Horst.