Koala (IMAGE) University of Queensland Caption "The koala, red goshawk, matted flax-lily and purple clover are more efficient umbrella species, yet none of these appear on the existing federal government priority species list." Credit The University of Queensland Usage Restrictions None License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.