The running joke here in Canada is that they are our "Cobra Chicken Attack Squadron". They are dangerous in the spring time, when their eggs hatch and the little geese are still in the nests. Some cities here in Canada employ Border Collie dogs with handlers, to herd the adults away from public parks and beaches. The Toronto International airport has a crew of hawks and falcons, who chase the geese away from the runways. The Hawks and Falcons are controlled by their handlers from the ground. There are also propane powered sound cannons that fire a loud noise to scare off the bird flocks at the airport. JIMB>