Super Bowl site, U.S. Bank Stadium, has been deadly for birds

As Minneapolis gets ready for this weekend's Super Bowl, the design of U.S. Bank Stadium is causing a problem for birds. They keep running into its reflective glass.Hundreds of birds have crashed into the glass because the stadium sits within a migratory bird pathway.According to USA Today, more than 20 species of birds have been found dead after colliding with the 200,000 square feet of exterior glass.The Minnesota Vikings and the Minnesota Sports Facilities Authorities are financing a study to