  The perfect action of free staggered fermions is calculated by blocking from
the continuum for degenerate and non-degenerate flavor masses. The symmetry
structure, connecting flavor transformations and translations, is explained
directly from the blocking scheme. It is convenient to use a modified Fourier
transformation, respecting this connection, to treat the spin-flavor structure
of the blockspins. The perfect action remains local in the non-degenerate case;
it is explicitly calculated in two dimensions. I finally comment on the
relation of the blocking scheme to the transition from Dirac-K\"ahler fermions
to staggered fermions.
