Medium Ground Finch with Its Blunt Beak (IMAGE) Uppsala University Caption Medium ground finch with its blunt beak. This particular bird has been banded by Rosemary and Peter Grant during their field studies on Daphne Major. Reproduced with permission from K. Thalia Grant, and Princeton University Press, which first published the remaining images in 40 Years of Evolution (P. R. Grant & B. R. Grant, 2014). Credit Peter R. Grant and B. Rosemary Grant. Usage Restrictions May only be published in connection to reports about the research published in "Female-biased gene flow between two species of Darwin's finches" or after permission from the photographer. 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.