I just thought that I'd add a bit of color and diversity. Rogers Park or at least West Rogers Park has some color and diversity. We have seen this visitor, a swallow tail butterfly, among several other varieties. If you plant butterfly friendly flowers and plants, they will come. We are seeing more and more return to our neighborhood.
Our recommendation once you plant the proper perrennials; don't catch or disturb them too much. They are starting to allow us to take close up photos of them. Fortunately, the Department of Homeland Security does not deport these colorful visitors.