(not a duck)

WASHINGTON (Reuters) - U.S. officials bolstered security on Thursday for a duck nursing eggs near the White House to protect her from demonstrators at a global economic summit beginning on Friday.

"We are widening the perimeter around the duck as a precautionary measure," Treasury spokesman Rob Nichols said.

Decision-making about the duck's safety was closely guarded. "We don't comment on security matters," Nichols said.