K oalas are extremely pickly eaters, however, preferring only a few types of leaves at a time, from the relatively small number of eucalyptus species comprising their overall habitat. This fact has become particularly problematic in recent years as the destruction of their trees has been allowed to proceed at an alarming rate. There have been reports of koalas occasionally eating leaves from trees other than eucalyptus, such as the Acacia costata, Bombax malabrica, Pinus radiata, Tristania conferta, and Tristania sauveolens. To identify the eucalyptus trees that koalas universally prefer with 100% accuracy is impossible, as information that has been recorded over the years from even within the relatively small number of areas where koalas continue to live has proven to be variable. A few species in each major region seem to be common such as the manna gum (Eucalyptus viminalis) and the grey gum (Eucalyptus punctata) and red gum (Eucalyptus camaidulensis) in New South Wales and Queensland. The table below is based upon verified observations from within the Eucalyptus group.
Linean Name English Name Common Less Common ___________________________________________________________________________ E. acmeniodes White Mahogany * E. amplifolia Cabbage Gum * E. blakelyi Blakely's Red Gum * E. botryoides Southern or Bangalay Mahogany * E. camaldulensis River Red Gum * E. camphora Broad-Leafed Sallee * E. cambageana Coowarra Box * E. cinerea Argyle Apple * E. citriodora Lemon-Scented Gum * E. creba Narrow-Leafed Red Ironbark * E. dalrympleana Mountain Gum * E. drepanophylla Queensland Grey Ironbark * E. elata Willow Peppermint * E. globulus Tasmanian Blue Gum * E. goniocalyx Long-Leafed Box * E. grandis Flooded Gum * E. haemastoma Scribbly Gum * E. largiflorens Black Box * E. macrohyncha Red Stringybark * E. maculata Spotted Gum * E. melliodora Yellow Box * E. microcorys Yellow Wood * E. nicholii Small-Leafed Peppermint * E. obliqua Messmate * E. ovata Swamp Gum * E. piluraris Blackbutt * E. populnea Poplar Box * E. propinqua Small Fruited Grey Gum * E. punctata Grey Gum * E. resinefera Red Mahogany * E. robusta Small or Swamp Mahogany * E. rubida Candle Bark * E. saligna Sydney Blue Gum * E. scoparia Wallengara White * E. sideroxylon rosea Pink Flowering Ironbark * E. tereticornis Forest Red Gum * E. thozetiana Mountain Yapungah * E. viminalis Manna or Ribbon Gum * ___________________________________________________________________________Quicktime video clip of a koala eating
-- From: The Koalas - Australia's Ancient Ones by Ken Phillips --
-- Video clip, from: Gulliver Film Prudctions --