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Celebrate Earth Day and the coming of spring by taking a walk to woodland vernal pools to look for salamanders and listen for frog activity. Join us at Grass River Natural Area on Saturday, April 21st at 11 am to learn how to identify local salamanders and frogs and help us record species for research! This is a 1.5 hour program and is $5 per person. More information at grassriver.org. Grass River Natural Area is located at 6500 Alden Highway, Bellaire MI