This taxon was so poorly known until recently that it was considered a subspecies of the Marbled Frogmouth. A recent revision showed that they are not even closely related, and that it is not only a different species, but that it shall be assigned to a new monotypic genus. So, its correct name now is Solomon Frogmouth (Rigidipenna inexpectata). You can appreciate its distinctive morphology comparing this video with those of real Marbled Frogmouths.
This taxon was so poorly known until recently that it was considered a subspecies of the Marbled Frogmouth. A recent revision showed that they are not even closely related, and that it is not only a different species, but that it shall be assigned to a new monotypic genus. So, its correct name now is Solomon Frogmouth (Rigidipenna inexpectata). You can appreciate its distinctive morphology comparing this video with those of real Marbled Frogmouths.