  We study one-pion transitions between charm baryon states in the framework of
a relativistic three-quark model. We calculate the charm baryon-pion coupling
factors that govern the S-wave, P-wave and D-wave one-pion transitions from the
s-wave and the lowest lying p-wave charm baryon states down to the s-wave charm
baryon states. For these we obtain: g_{\Sigma_c\Lambda_c\pi}=8.88 GeV^{-1},
f_{\Lambda_{c1}\Sigma_c\pi}=0.52 and f_{\Lambda_{c1}^*\Sigma_c\pi}=21.5
GeV^{-2}. We compare our rate predictions for the one-pion transitions with
experimental results.
