The mute swans that grace ponds and shorelines are so lovely, so peaceful, so harmless. Really? Not according to some wildlife conservationists who are making some swan cons known. Connecticut now has 1,100 mute swans and critics call them an invasive species that is disrupting the shoreline habitats of native species. The N.Y. Times says they “devour eight pounds of aquatic vegetation per day and, in their daily feeding frenzy, uproot an additional 20 pounds of plants.” Attempts to control the swan population have been met with lawsuits from their supporters. On the west coast, Oregon has the mute swan on its 100 Most Dangerous Invaders list.