  The $\eta$ production in the nucleon resonance energy region is studied
within the unitary coupled-channels effective Lagrangian approach of the
Giessen model. We demonstrate that the second peak recently observed in the
cross section of $\eta$ photoproduction on the neutron at $\sqrt{s}$=1.66 GeV
can be explained in terms of coupled-channel effects due to $S_{11}(1650)$ and
$P_{11}(1710)$ resonance excitations.

Nuclear Theory