Came across an unusual nesting site this week while visiting my graduate school alma mater Northwestern University in Evanston, Il. outside Chicago. A colony of house (or English) sparrows had built mud nests on one of the school's buildings. It was quite a flurry of coming and going among the small colorful birds. Several other passersby stopped at the surprising site. The source of the nesting material seemed to be the nearby creek or reservoir embankment. House sparrows are common in downtown Charleston too. I think I impressed a few other watchers by being able to identify the resourceful urban dwellers!