BROOKFIELD, Illinois, Sept. 1 -- Brookfield Zoo Chicago issued the following news release: * * * Guests can decorate pictures, sign a birthday card, and more at the Zoo * * * From September 6-8, Brookfield Zoo Chicago is hosting a birthday celebration for a 50-year-old dolphin named Lucky, one of the oldest male bottlenose dolphins in human care at a facility accredited by the Alliance of Marine Mammal Parks and Aquariums. During the celebration, zoogoers can sign a birthday card and color p  more