Rowan Emberson of Lincoln University collected two from a petrel burrow on Mangare in 1993, and John Marris and Emberson collected others in expeditions in 1997 and 1998 to Mangere, Rangatira, and Star Keys, in burrows, and under logs and leaf litter, and with pitfall traps.

[1] Clarke also noted its greatly reduced wings; this species, unlike most staphylinid beetles, is flightless.

[3] The forest floor in seabird colonies is compacted and has little leaf litter, but C. rekohuensis is able to shelter in burrows.

However seabirds that die on Rangatira Island are rapidly skeletonised by the abundant endemic wētā species Talitropsis megatibia and Novoplectron serratum.

[1] Like other flightless beetles of the Chatham Islands, C. rekohuensis is vulnerable to rodent invasion of its last remaining refuges; unlike them, it does not have any formal protection under the Wildlife Act 1953.