A Ruby-Throated Hummingbird in Flight (IMAGE) University of Toronto Caption Professor Kenneth Welch and his team found that hummingbirds can burn fructose equally as well as glucose, which is something other invertebrates cannot achieve. Credit Ken Jones Usage Restrictions Credit Ken Jones 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.