A Blackbird Eating Buckthorn Fruits (IMAGE) University of Exeter Caption A juvenile blackbird (<em>Turdus merula</em>) eating Mediterranean buckthorn fruits (<em>Rhamnus alaternus</em>). Resident, breeding or non-migrating birds typically disperse seeds at short distances, mostly within 1km from source plants, which is insufficient for plants to keep pace with current climate change. Credit Juan P. González-Varo Usage Restrictions This image may only be used with reports of this research 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.