CHICAGO -- High above the heads of business professionals gathering for lunch downtown Thursday, the tail feathers of a peregrine falcon popped out over a concrete ledge on a large building. Joe Bisognani, who works for Wabtec, a technology company across the street in the Loop, stood on the Monroe Street Bridge, squinting up at the tiny shadow protruding in the sky. The Palatine resident said he heard about the falcon in the news. “I thought about taking a different route, but this was on the way to getting my afternoon coffee and I was willing to take the risk of being in the falcon’s territ...