The greater Blue Mountains region has been identified by BirdLife International as an Important Bird Area (IBA) because it supports a high proportion of the global populations of the range-restricted Rockwarbler as well as populations of Flame Robins, Diamond Firetails and Pilotbirds.
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The area is called "Blue Mountains" based on the fact that when atmospheric temperature rise, the essential oil of various Eucalyptus species evaporates and disperse in the air, then visible blue spectrum of sunlight propagates more than other colours.
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This is the story of the evolution of Australia's unique eucalypt vegetation and its associated communities, plants and animals.
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