Vulture investors have been circling troubled commercial real estate for months, and this year, many expect plenty of opportunities to pounce. A survey released today reveals that 41 percent of distressed investors see real estate as a particularly attractive asset in 2010, up from just 19 percent who said that in 2009. The survey was a joint project by Debtwire, FTI Consulting, Macquarie Capital and the law firm Bingham McCutchen. “The shoe has dropped and now there are a lot of opportunities,” said Matt Witz, editor-in-chief of Debtwire. Though last year, 56 percent of distressed investors were targeting 20 percent returns on their investments, this year, their expectations have dropped. Roughly half of investors predicted 15 percent returns and one-third said they did not expect to see returns of more than 8 percent.