Lucy Smith from London Zoo weighs Elton, a 9 month old Spectacled Owl. She weighed 635 grams.London Zoo annual weigh-in. Zookeepers prepare to record the weight and height of the 16,000 animals currently living at London Zoo. London Zoo, Regents Park, London, England..August 22nd, 2012.animal bird clipboard white half length.CAP/BF.©Bob Fidgeon/Capital Pictures.
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