Wild Things Effects of Architecture by Elizabeth Duckworth. Shadows juxtapose as a Rock Pigeon flys into frame at 1895 North 12 St. in Philadelphia on Monday, Oct. 10, 2016. Free Selection by Elizabeth Duckworth. Mourning Doves fly above Seward Lane in Aston on Sunday, Oct. 9 2016. Food by Elizabeth Duckworth. An Eastern Gray Squirrel hangs onto a tree with its hind legs while eating an acorn at 1331 Polett Walk in Philadelphia on Monday, Oct. 10, 2016.