Listen for frogs and other night animals, like woodcocks. We can’t guarantee that wildlife will appear, but if they do we may see the woodcock’s fascinating mating ritual known as sky dance. Wear sturdy closed-toe shoes and come prepared for weather. Walks canceled for unsafe weather or trail conditions. Free, register through Eventbrite by April 16: uw-madison-arboretum.eventbrite.com. Meet at the Visitor Center.