And sometimes the birds kill them self doing that, though not as often as one would assume.
BTW did you know the Japanese Shinkansen high speed trains was designed with the kingfisher bird in mind, this was done to minimize the sonic boom as they enter a tunnel at speed.
I wonder what those Japanese do with trains, cuz there they run on time all year around with only earthquakes messing up the time table, here in Denmark they never run on time, and every fall a few leaves on the track come as a big surprise.
And god forbid it ever became real winter here like in the old days, cuz then we are screwed cuz i don't think we have a single snow thrower here, so only what the trains then self can push thru.