(MD) (Natural History Society of Maryland) Don your downiest coat and channel duck resilience on this cruise to find wintering waterfowl on the Patuxent River. We will be on the lookout for bufflehead, canvasback, ruddy duck, greater and lesser scaup, common goldeneye, ring-necked duck, wood duck, American wigeon, black duck, common loon, American coot, dunlin, and horned lark. Alex Pellegrini, ...