  We investigate entanglement harvesting in AdS$_4$. Applying the general
results of [Phys. Rev. D 97, 125011 (2018)], we consider two scenarios: one
where two particle detectors are geodesic, with equal redshift; and one where
both are static, at unequal redshift. As expected, at large AdS length $L$, our
results approximate flat space. However at smaller $L$ we observe non-trivial
effects for various field boundary conditions. Furthermore, in the static case
we observe a novel feature of the entanglement as a function of switching time
delay, which we attribute to different (coordinate) frequencies of the
detectors. We also find an island of separability in parameter space, analogous
that that observed in AdS$_3$, to which we compare and contrast our other
results. The variety of features observed in both cases suggest further study
in other spacetimes.
