  We examine the full counting statistics of quantum dots, which display
super-Poissonian shot noise. By an extension to a generic situation with many
excited states we identify the underlying transport process. The statistics is
a sum of independent Poissonian processes of bunches of different sizes, which
leads to the enhanced noise. The obtained results could be useful to determine
transport characteristics in molecules and large quantum dots, since the noise
(and higher cumulants) allow to identify the internal level structure, which is
not visible in the average current.
