I was reading up on this introduced (in 1919) species and found this: One of the world’s most aggressive waterfowl species, especially while nesting and raising their young, mute swans drive out native waterfowl and other wetland wildlife with their hostile behavior. Mute swans will chase native breeding birds from their nests. A single mute swan can consume four to eight pounds of plants a day. They uproot and destroy these wetland plants that are a main food source for native birds and cover for native fish and invertebrates. Continuous feeding by a flock of mute swans can destroy an entire wetland ecosystem. These large birds show little fear of people. Each year the DNR receives reports of mute swan attacks on people in boats and on shore. - (End). This looks like a statewide problem and these swans are even non-migratory. What's going on with that problem up there? Any programs by any clubs or agencies to protect waterfowl and ecosystems from these foul invaders? Other than shoot, shovel and shut up, I mean.