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    MOSCOW, October 27 (RIA Novosti, Maria Gusarova) – The Moscow Zoo’s Chief Veterinarian said Thursday that the cause of the bird flu outbreak is the unmonitored transit of domestic birds, not wild bird migration.

    “No one has proved anywhere that the carriers of avian flu are wild birds…However, the black market for trading animals provides all the conditions for the unmonitored transit of un-examined birds,” Valentin Kozlitin said.