MYN / Lily Kumpe / Eucalyptus Leaf Composite (Eucalyptus sp) Denmark Shire, Warren Bioregion, Western Australia. Meetyourneighbtous.net project

Rob Tilley / Rainbow Eucalyptus (Eucalyptus sp.) bark detail. Maui, Hawaii, February.

ZSSD / Queensland Koala (Phascolarctos cinereus adustus) eating eucalyptus leaves, native to Australia

ZSSD / Queensland Koala (Phascolarctos cinereus adustus) in eucalyptus tree, native to Queensland

Gerry Ellis / Koala (Phascolarctos cinereus) male in tree, Australia

Gerry Ellis / Koala (Phascolarctos cinereus) mother and three month old joey in tree, Australia

Gerry Ellis / Koala (Phascolarctos cinereus) mother and joey, three month old, Australia

Gerry Ellis / Koala (Phascolarctos cinereus) male in tree, Australia

Shin Yoshino / Koala (Phascolarctos cinereus) feeding on Eucalyptus, Australia

Juan Carlos Munoz / Oak (Quercus sp) forest with trees coming into leaf in spring, surrounded by Eucalyptus (Eucalyptus sp) plantation. Cueva la Cubilla, Samano, Castro Urdiales, Cantabria, Spain. April 2019.

Donald M. Jones / American Robin (Turdus migratorius) feeding on Mountain Ash (Sorbus sp) berries in winter, Troy, Montana

Juergen Freund / Fresh growth on scorched Eucalyptus ( Eucalyptus sp) tree, after bush fire, Queensland, Australia.

Juergen Freund / Fresh growth on scorched Eucalyptus ( Eucalyptus sp) tree, after bush fire, Queensland, Australia.

Martin Willis / Ghost Gum (Eucalyptus papuana) trees, Queensland, Australia

Sebastian Kennerknecht / Gum Tree (Eucalyptus sp) forest, Murramarang National Park, New South Wales, Australia

ZSSD / Queensland Koala (Phascolarctos cinereus adustus) and joey sleeping in eucaplytus tree

Roland Seitre / Koala (Phascolarctos cinereus) feeding on Gum Tree (Eucalyptus sp) leaves, Port Lincoln, South Australia, Australia

Roland Seitre / Koala (Phascolarctos cinereus) in Gum Tree (Eucalyptus sp), Port Lincoln, South Australia, Australia

Roland Seitre / Koala (Phascolarctos cinereus) mother and joey feeding in tree, Australian Reptile Park, New South Wales, Australia

Roland Seitre / Koala (Phascolarctos cinereus) mother and joey feeding in tree, Australian Reptile Park, New South Wales, Australia

Suzi Eszterhas / Koala (Phascolarctos cinereus) dominant male feeding on eucalyptus, Kangaroo Island, Australia

Roland Seitre / Koala (Phascolarctos cinereus) feeding on Gum Tree (Eucalyptus sp) leaf, Port Lincoln, South Australia, Australia

Roland Seitre / Koala (Phascolarctos cinereus) feeding on Gum Tree (Eucalyptus sp) leaf, Port Lincoln, South Australia, Australia

Roland Seitre / Koala (Phascolarctos cinereus) feeding on Gum Tree (Eucalyptus sp) leaves, native to Australia

Martin Willis / Snow Gum (Eucalyptus pauciflora) bark, Mount Field National Park, Tasmania, Australia

Martin Willis / Snow Gum (Eucalyptus pauciflora) trees, Mount Field National Park, Tasmania, Australia

Martin Willis / Musk Lorikeet (Glossopsitta concinna) on flowering eucalyptus, Hobart, Tasmania, Australia

Martin Willis / Musk Lorikeet (Glossopsitta concinna) feeding on eucalyptus flower nectar, Hobart, Tasmania, Australia

Martin Willis / Palm Cockatoo (Probosciger aterrimus) male displaying on his nest in a hollow eucalyptus tree, Iron Range, Cape York Peninsular, Australia

Tui De Roy / Koala (Phastolarctos cinereus) in Gum Tree (Eucalyptus sp) forest, Victoria, Australia

Tui De Roy / Koala (Phastolarctos cinereus) mother carrying young in Gum Tree (Eucalyptus sp) forest, Victoria, Australia

Tui De Roy / Koala (Phastolarctos cinereus) feeding on Gum Tree (Eucalyptus sp) leaves, Victoria, Australia

Tui De Roy / Koala (Phastolarctos cinereus) feeding on Gum Tree (Eucalyptus sp) leaves, Victoria, Australia

Martin Willis / Sugar Glider (Petaurus breviceps) on Red Mahogany (Eucalyptus resinifera), Wondecla, Queensland, Australia

Martin Willis / Sugar Glider (Petaurus breviceps) feeding on Red Mahogany (Eucalyptus resinifera) sap, Wondecla, Queensland, Australia

Martin Willis / Bridled Honeyeater (Lichenostomus frenatus) feeding on Red Mahogany (Eucalyptus resinifera) sap from cut made by Greater Glider (Petauroides volans), Wondecla, Queensland, Australia

Yva Momatiuk & John Eastcott / Gum Tree (Eucalyptus sp) forest, New South Wales, Australia

Yva Momatiuk & John Eastcott / Gum Tree (Eucalyptus sp) forest, New South Wales, Australia

Yva Momatiuk & John Eastcott / Gum Tree (Eucalyptus sp) forest and Milky Way, New South Wales, Australia

Yva Momatiuk & John Eastcott / Gum Tree (Eucalyptus sp) and Ayers Rock, Uluru-kata Tjuta National Park, Northern Territory, Australia

Kevin Schafer / Indonesian Gum (Eucalyptus deglupta) bark, Tompotika Peninsula, central Sulawesi, Indonesia

Rob Tilley / Rainbow Eucalyptus (Eucalyptus sp.) bark detail. Maui, Hawaii, February.

Rob Tilley / Rainbow Eucalyptus (Eucalyptus sp.) bark detail. Maui, Hawaii, February.

Christian Ziegler / Pansy Orchid (Diuris magnifica) flowers in eucalyptus forest, Perth, western Australia

Yva Momatiuk & John Eastcott / Spotted Iron Gum (Eucalyptus maculata) trunk with indentations left by peeling bark, New South Wales, Australia

Yva Momatiuk & John Eastcott / Scribbly Gum (Eucalyptus haemastoma) with moth trails in bark, New South Wales, Australia

Yva Momatiuk & John Eastcott / Gum Tree (Eucalyptus sp) group at sunset, Nullarbor Plain, Western Australia, Australia

Yva Momatiuk & John Eastcott / Gum Tree (Eucalyptus sp) group at sunset, Nullarbor Plain, Western Australia, Australia

Yva Momatiuk & John Eastcott / Gimlet Gum (Eucalyptus salubris) trees and shrubs, Western Australia, Australia

Yva Momatiuk & John Eastcott / Gimlet Gum (Eucalyptus salubris) trees, Western Australia, Australia

Yva Momatiuk & John Eastcott / Gimlet Gum (Eucalyptus salubris) trees, Western Australia, Australia

Yva Momatiuk & John Eastcott / Gum Tree (Eucalyptus sp) trunk with peeled bark, Western Australia, Australia

Yva Momatiuk & John Eastcott / Gum Tree (Eucalyptus sp), Leeuwin Naturaliste National Park, Western Australia, Australia

Yva Momatiuk & John Eastcott / Red Tingle (Eucalyptus jacksonii) tree trunk, Walpole-Nornalup National Park, Western Australia, Australia

Yva Momatiuk & John Eastcott / Gum Tree (Eucalyptus sp) group lining road with cumulus clouds above, Nullarbor Plain, Western Australia, Australia

Yva Momatiuk & John Eastcott / Gum Tree (Eucalyptus sp) group and cirrus clouds, Nullarbor Plain, Western Australia, Australia

Yva Momatiuk & John Eastcott / Koala (Phascolarctos cinereus) climbing eucalyptus tree, Otway National Park, Victoria, Austraila

Yva Momatiuk & John Eastcott / Koala (Phascolarctos cinereus) climbing eucalyptus tree, Otway National Park, Victoria, Austraila

Yva Momatiuk & John Eastcott / Koala (Phascolarctos cinereus) feeding on leaves of eucalyptus tree, Otway National Park, Victoria, Austraila

Yva Momatiuk & John Eastcott / Koala (Phascolarctos cinereus) feeding on leaves of eucalyptus tree, Otway National Park, Victoria, Austraila

Yva Momatiuk & John Eastcott / Koala (Phascolarctos cinereus) in eucalyptus, Otway National Park, Victoria, Austraila

Yva Momatiuk & John Eastcott / Koala (Phascolarctos cinereus) feeding on eucalyptus leaves, Otway National Park, Victoria, Austraila

Yva Momatiuk & John Eastcott / Koala (Phascolarctos cinereus) sitting in eucalyptus tree, Otway National Park, Victoria, Austraila

Nick Upton / Eucalpytus (Eucalyptus sp.) trees growing beside Porto river within a UNESCO World Heritage coastal / marine site and Corsica's National Park (Parc Naturel Regional de Corse). Porto, Corsica, France,...

Nick Upton / Eucalpytus (Eucalyptus sp.) trees growing beside Porto river within a UNESCO World Heritage coastal / marine site and Corsica's National Park (Parc Naturel Regional de Corse). Porto, Corsica, France,...

Juergen Freund / Row of Eucalyptus trees (Eucalyptus sp.) reflected on an oasis in the middle of the dry outback. Camooweal campground, Queensland, Australia, February 2008

Luciano Candisani / Piles of processed charcoal in planted eucalyptus forest, Bahia, Brazil

Luciano Candisani / Charcoal kilns in planted eucalyptus forest, Bahia, Brazil

Gerry Ellis / Bush fire burning dry grasses and eucalyptus trees, Kakadu National Park, Australia

ZSSD / Koala (Phascolarctos cinereus), native to Australia

Mike Potts / Rainbow lorikeet (Trichoglossus haematodus) feeding on Eucalyptus sp flowers in the suburbs of Perth, Western Australia. December

Angelo Gandolfi / Person walking through Eucalyptus (Eucalyptus sp.) forest, Parque Nacional de las Islas Atlantica (Atlantic Islands National Park). Galicia, Spain. Although artificial, the forest has attained its own...

Angelo Gandolfi / Artificial habitat created where Eucalyptus (Eucalyptus sp.) plantations have mixed with native species under high-rainfall conditions. Galicia, Spain. July 2008.

Ingo Arndt / Gum Tree (Eucalyptus sp) bark, Big Sur, California

ZSSD / Queensland Koala (Phascolarctos cinereus adustus) in eucalyptus tree, native to Australia

Oriol Alamany / Kites (Milvus sp) catching insects in wildfire in Eucalyptus forest with termite mounds, Katherine / Nitmiluk, Northern Territory, Australia, November

ZSSD / Queensland Koala (Phascolarctos cinereus adustus) eating eucalyptus leaf, native to Queensland

Ray Goldring / Gum Tree (Eucalyptus sp) forest fire, Victoria, Australia

Andy Reisinger / Eucalyptus Tree in the wind, near Waiau, Canterbury, New Zealand

Steven David Miller / Gum tree flowers {Eucalyptus sp} with bee feeding on the blossom, Melbourne, Australia

Steven David Miller / Gum tree flowers {Eucalyptus sp} with bee feeding on the blossom, Melbourne, Australia

Norbert Wu / Monarch (Danaus plexippus) butterfly gathering on eucalyptus trees in winter, Pacific Grove, California

Norbert Wu / Monarch (Danaus plexippus) butterfly gathering on eucalyptus trees in winter, Pacific Grove, California

Ingo Arndt / Gum Tree (Eucalyptus sp) plantation, Rwanda

Matthias Breiter / Mottlecah Bush (Eucalyptus macrocarpa) seed capsule, Boyup Brook, Australia

Steven David Miller / Gum trees covered with snow {Eucalyptus sp} Mt Buller NP, Australia

Mitsuaki Iwago / Pygmy Possum (Cercartetus sp) with a captured moth on eucalyptus blossoms, Indonesia

David Noton / River Red Gum trees {Eucalyptus sp} nr Wilpena, Flinders Ranges National Park, South Australia

Jean E. Roche / Flower and sequential stages of fruit maturation of a Eucalyptus (Eucalyptus sp.) Corsica, France

Ingo Arndt / Gum Tree (Eucalyptus sp) bark detail, Costa Rica

Ingo Arndt / Gum Tree (Eucalyptus sp) bark detail, Costa Rica

Ingo Arndt / Mountain Gorilla (Gorilla gorilla beringei) silverback stripping bark from a Eucalyptus tree to reach the sap, Rwanda

Patricio Robles Gil / Tallest Eucalyptus tree {Eucalyptus sp} 76m high, New South Wales, Australia

Owen Newman / Close up of Gum tree {Eucalyptus sp} bark, nr Broken Hill, NSW, Australia.

Owen Newman / Close up of Gum tree {Eucalyptus sp} bark, nr Broken Hill, NSW, Australia.

Owen Newman / Close up Gum tree {Eucalyptus sp} bark, nr Broken Hill, NSW, Australia.