Coordinators:
Albert de Jong
Leon Kelder
Roland-Jan Buijs
Thijs Horst
Merijn Loeve
Mars Muusse
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Caspian Gull cachinnans hybrid P:= 1CY, September 09 2026, Seaton Burn - Newcastle upon Tyne, England. Picture: Chris Barlow.
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Tibia Y-P:= and metal 5.645.674, ringed as pullus Larus cachinnans on June 05 2026 at De Kreupel, Holland (5247.00 N 513.00 E).
Ringer Leon Kelder.
Head+bill: 98,7
Mass:
794,0
Recoveries:
09-09-2026 Seaton Burn (Big Waters), Newcastle upon Tyne, ENGELAND 5.503,16 N 138,46 W colourring read Chris Barlow
below: Caspian Gull cachinnans hybrid P:= 1CY, September 09 2026, Seaton Burn - Newcastle upon Tyne, England. Picture: Chris Barlow.
Notched tertials most obvious trait pointing to Herring Gull influences.



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