A bird perches on tangled metal bars from buildings destroyed during the three-week offensive Israel launched last year, in the northern Gaza Strip on Christmas Eve December 24, 2009. December 27 marks one year since the start of a three-week offensive Israel launched in Gaza during which more than 1,400 Palestinians and 13 Israelis were killed. REUTERS/Yannis Behrakis (GAZA - Tags: ANNIVERSARY CIVIL UNREST POLITICS SOCIETY ANIMALS