A South American king vulture in an outdoor exhibit at the National Aviary in Pittsburgh, shown Wednesday, Sep. 4, 2002 is under watch because of concern of infection by the West Nile virus according to the aviary's curator, James Majeur. The West Nile virus, first spotted in this country in a sick crow three years ago, has now attacked at least 111 species of birds, including the bald eagle and the endangered Mississippi sandhill crane. The quick spread has surprised and alarmed wildlife researchers.(AP Photo/Keith Srakocic)
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