  We present results for non-perturbative renormalization (NPR) factors for
staggered fermion bilinears of arbitrary spin and taste. We use "covariant"
bilinears which transform irreducibly under the lattice translation and
rotation group, and thus do not mix. We form ~ 30 ratios which have no
anomalous dimensions, and compare the NPR results to those from 1-loop
perturbation theory. We also compare the absolute renormalization factors
(which, in general, do have anomalous dimensions) to 1-loop perturbation
theory. We use asqtad and HYP-smeared staggered valence fermions on the coarse
MILC asqtad lattices.
