  The magnetic moment of the $\Lambda_c$, $\Xi_{c1}^+$ and $\Xi_{c1}^0$ vanish
when the charm quark mass is taken to infinity because the light degrees of
freedom are in a spin zero configuration. The heavy quark spin-symmetry
violating contribution from the light degrees of freedom starts at order
$1/m_c$, the same order as the contribution from the heavy charm quark. We
compute the leading long-distance contribution to the magnetic moments from the
spin-symmetry breaking $\Sigma_c^*-\Sigma_c $ mass splitting in chiral
perturbation theory. These are nonanalytic in the pion mass and arise from
calculable one-loop graphs. Further, the difference between the magnetic
moments of the charged charmed baryons is independent of the charm quark mass
and of the subleading local counterterm.
