 Many economists are forecasting that mortgage rates will ease further in coming months. I'm Alex Vega. A new initiative to keep an eye on swimmers and sharks off New York City beaches with surveillance drones spurring a backlash from shorebirds. It seems they don't appreciate the drones invading their airspace, so they've been swarming the devices, forcing pilots to ground the drones. The city is now avoiding nesting areas, but the attacks are not stopping. Wildlife experts are concerned. They say the birds may be having a stress response.