“This is pretty exciting, as it is the first clear demonstration of hummingbirds using their sense of smell alone to make foraging decisions and avoid contact with potentially dangerous insects at a flower or feeder,” said senior author Dr. Erin Wilson Rankin, a researcher in the Department of Entomology at the University of California, Riverside.

— Read more in Hummingbirds Use Sense of Smell to Make Foraging Decisions: Study at Sci News. (You can find the original paper here.)