  The novel measurements of the $\gamma^\ast N \to \Delta(1232)$ Coulomb
quadrupole form factor in the range $Q^2=0.04$--0.13 GeV$^2$ changed the trend
of the previous data. With the new data the electric and Coulomb form factors
are both in remarkable agreement with estimates of the pion cloud contributions
to the quadrupole form factors at low $Q^2$. The pion cloud contributions to
the electric and Coulomb form factors can be parametrized by the relations $G_E
\propto G_{En}/ \left(1 + \frac{Q^2}{2M_\Delta(M_\Delta-M)}\right)$ and $G_C
\propto G_{En}$, where $G_{En}$ is the neutron electric form factor, and $M$,
$M_\Delta$ are the nucleon and $\Delta$ masses, respectively. Those
parametrizations are in full agreement with Siegert's theorem, which states
that $G_E= \frac{M_\Delta-M}{2M_\Delta} G_C$ at the pseudothreshold, when
$Q^2=-(M_\Delta -M)^2$, and improve previous parametrizations. Also a small
valence quark component estimated by a covariant quark model contributes to
this agreement. The combination of the new data with the new parametrization
for $G_E$ concludes an intense period of studying the $\gamma^\ast N \to
\Delta(1232)$ quadrupole form factors at low $Q^2$, with the agreement between
theory and data.
