Met with the blaring calls of the Red-winged Blackbirds and joyful chatter of Robins when stepping outside, you know it’s springtime in Wisconsin. These sounds create a feeling of warmth and excitement for the summer months that are just around the corner, and are a sure sign of the changing seasons. There are, though, harbingers of spring that aren’t so vociferous. In fact, two species in particular are rather silent in their seasonal debut, but just as telling. The Mourning Cloak butterfly and the Butler’s Gartersnake are two species that rise from their winter hibernation rather than migrating back into Wisconsin.