  \emph{Nonergodic extended states} are a class of quantum states purported to
form in between the phases of weak disorder ergodicity and strong disorder
localization in random many-body systems. Their defining feature is a
combination of extendedness and incomplete coverage (`nonergodicity') of Fock
space. We here suggest an alternative description where non-localized many-body
wave functions remain ergodic in an orthodox sense: uniform, or thermal
coverage of a shell of constant energy in Fock space. We apply analytic methods
of localization and information theory to describe this type of quantum
ergodicity under a mild set of assumptions. Comparison to numerical results for
a SYK model corroborates the picture.
