Question 631434
Think of the pigeon as not moving, but the train traveling 
at {{{ 164 + 40 = 204 }}} mi/hr
{{{ d = 204*2 }}}
{{{ d = 408 }}} mi apart
The distance diagram would look like:
{{{ graph( 400, 400, -1, 3, -50, 500, 204x  ) }}} 
with distance on the vertical axis
and time on the horizontal