Parasitized Medium Ground Finch Nestling (IMAGE) University of Utah Caption A medium ground finch is nestling with nostril and abdomen lesions caused by infestation with parasitic fly larvae. Credit Jennifer Koop, University of Utah 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.