 A study of roosting habitat and preferences for "V. regulus" and "Nyctophilus gouldi" in the Jarrah Forest of Southwest Australia examined the habits of these bats at two locations.This species favoured hollows of trees, predominantly the giants jarrah, "Eucalyptus marginata", and marri, "Corymbia calophylla", located in mature and open forest buffers reserved by later forest management practices.The individuals occupied a number of roosts in a confined locality, a hollow at a high elevation on the tree, and seem to favour riparian zones.