Modern hummingbird (IMAGE) Field Museum Caption A modern hummingbird, Androdon aequatorialis, which has tooth-like structures at the tip of its beak that it uses to fight. Credit Kate Golembiewski Usage Restrictions Please include credit License Original 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.