Join us this evening for a lively presentation featuring frogs, salamanders and quivering masses of eggs from local ponds. Find out how you can recognize frogs by their calls. The program will start in the outdoor pavilion followed by a walk to a nearby pond to see and hear frogs singing in the night. Bring a flashlight and dress for the weather. Cost: $2/person or $5/family. Eddy Discovery Center, 17030 Bush Rd. in the Waterloo Recreation Area near Chelsea. Advance registration required at (734) 475-3170, as this program is limited to 40 people.