Head to Bartram's Garden this May for the final day of the Philadelphia Bird Race, organized by BirdPhilly and the Delaware Valley Ornithological Society. From 10-11 am, teams will have 60 minutes to identify as many birds as possible by sight or sound. This is a one-hour birding race, on foot. Teams must not use any vehicles or wheels to get around. Hence, the "Green" title. No motorized vehicles, no bicycles, skates, or skateboards are permitted. From 12-1 pm, a brown bag picnic lunch will be held at the Eastwick Pavillion, followed by the Philadelphia Bird Race Awards Ceremony at 1pm.