Tracking Biodiversity on a Global Scale (2 of 3) (image) American Association for the Advancement of Science Share Print E-Mail Caption This shows a young boy and a robin (Erithacus rubecula) watching each other. This image relates to a paper that appeared in Jan. 18, 2013, issue of Science, published by AAAS. The paper, by Henrique Miguel Pereira at Universidade de Lisboa in Lisboa, Portugal, and colleagues was titled, "Essential Biodiversity Variables." Credit [Image courtesy of Edwin Kats, Royal Society for the Protection of Birds] Usage Restrictions Please cite the owner of the image when publishing. This image may be freely used by reporters as part of news coverage, with proper attribution. Non-reporters must contact Science for permission. Share Print E-Mail 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.