As overnight temperatures dip into the teens and daytime temperatures barely rise above freezing, ice is forming in the quiet coves and bays along the river. Until recently, many of these coves and bays were home to duck blinds, which are framed with scrap lumber and camouflaged with cedar branches. Even though duck-hunting season has not officially ended, the river ice has commandeered the duck blinds. Ice floes are dragging these temporary structures and setting them adrift into the tidal current. As I look out my window, I see a couple of blinds floating upstream on the incoming tide.