BELOIT – Imagine a single flock of 20,000 geese taking flight from a wetland and filling the sky above your head with wings and clamor. Anyone in southern Wisconsin can experience that and so much more with a lovely seasonal drive to Horicon Marsh. For an amazing evening earlier this month, former Horicon naturalist Bill Volkert brought the vast wetland’s best and worst moments in history to Beloit. Volkert was featured speaker at Green Rock Audubon’s annual meeting and d