North Korea said Thursday an unidentified flying object at which South Korea's military fired rounds of warning shots this week was actually a "flock of birds," not a balloon carrying propaganda leaflets as Seoul has claimed.A spokesman of the General Staff of the North's Korean People's Army, through the country's official news agency, criticized South Korea's action as "another armed provocation" in the area along the Military Demarcation Line.The refutation came a day after South Korea revised its initial claim that the object, which crossed the border from North Korea on Tuesday, may ha…READ FULL ARTICLE