How dangerous are drones to aircraft?
Any midair collision by having an object is dangerous to aircraft, as exemplified with the crash of US Airways Flight 1549 in January 2009. Capt Chesley Sullenberger steered a passenger jet carrying 155 people in to the Hudson River after it hit a flock of Canada geese after that taking off from La Guardia airport in Ny city. The birds destroyed both aircraft engines.
The weight of an Canada goose