Richardson Nature Center Events Raptors in the Yard , Sun, Apr 15, 3-4 PM, FREE! Nests and Flowers , Preschool Drop-Off, Tues, Apr 17, 1-3 PM, $10 April Showers , My Preschooler & Me, Thurs, Apr 17, 10-11:30 AM, $5 Celebrate Earth Day , Sun, April 22, 2-4 PM, FREE! Plants and Flowers , Preschool Drop-Off, Tues, Apr 24, 1-3 PM, $10 Richardson's Grand Green Opening , Sat, Apr 28, 9 AM - noon, FREE! Women's Spring Walk , Sat, Apr 28, 10 - 11:30 AM, FREE! Snakes Alive! , Sun, Apr 29, 3-4 PM, FREE! Baby Birds , Preschool Drop-Off, Tues, May 1, 1-3 PM, $10 Walk When the Moon is Full: Frog Moon , Fri, May 4, 8-9:30 PM, $5 Raptor Release , Hyland Park Reserve, Sat, May 5, 11 AM, FREE! Spring Changes Hike , Sat, May 12, 10 - 11:30 AM, $5 Pond Exploration , Sun, May 13, 3-4 PM, FREE! Reptiles and Amphibians , Preschool Drop-Off, Tues, May 15, 1-3 PM, $10 Turtle Time , Sun, May 20, 3-4 PM, FREE! Baby Insects , Preschool Drop-Off, Tues, May 22, 1-3 PM, $10 Forest Play ...