Most importantly, the heartwood of the majority of trees in eucalypt woodlands are eaten by termites, which are the base of the numbat's diet. During mating seasons, logs provide numbats an area for their nesting sites. At night, the numbats seek shelter inside hollow logs, and during the day, numbats can avoid predators, especially birds and foxes, by staying hidden within the darkness of the logs. The logs of eucalypt woodlands play a great role in aiding in the survival of numbats. Now, they can only be found in eucalypt woodlands, which are located at an elevation of approximately 317m, in the wettest periphery of the former range because of the abundance of old and fallen trees. When numbats were abundant, they occupied semi-arid and arid woodlands (composed of flowering trees and shrubs of the genera Eucalyptus and Acacia) and grasslands (composed of grasses of the genera Triodia and Plectrachne). ( Friend and Neil, 2003 "Numbats", 2012 "Numbat (Myrmecobius fasciatus)", 2012a) Reintroduced populations can be found in Dragon Rocks Nature Reserve, Batalling State Forest, Tutanning Nature Reserve, and Boyagin Nature Reserve (all located in Western Australia), Yookamurra Sanctuary (located in South Australia), and Scotia Sanctuary (located in New South Wales). Only two natural populations remain, the Dryandra and Perup sites, both located in Western Australia. Previously occupying most of southern Australia, including New South Wales and Victoria, and parts of Western Australia and the Northern Territory, numbat are now extinct in approximately 99% of its former range. Since the beginning of European settlement in Australia, the abundance of numbats has declined dramatically.
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