** FILE -- HOLD FOR RELEASE UNTIL 1 P.M. EDT WEDNESDAY MAY 16, 2007 ** In a file photo young house wrens wait for food as they huddle inside their nesting box, Thursday, July 17, 2003, in Raleigh, N.C. Birds that had been the mainstays of suburban skies - including the robins of spring, the bluebirds of happiness and especially the scavenging crows - have been decimated by West Nile Virus, a new study has found. Only the blue jay and house wrens bounced back in 2005. The research, published Thursday May 17, 2007 in the journal Nature, quantified what had been known in anecdotes by comparing 26 years of bird breeding surveys.(AP Photo/Bob Jordan)