In a surprising twist on how nature works, new research suggests that creatures like bees and hummingbirds may be regularly consuming tiny amounts of alcohol as part of their daily diet without getting drunk.
Scientists, including researchers from the University of California, have discovered that floral nectar the main food source for many pollinators often contains trace levels of ethanol. This alcohol is believed to form naturally when yeasts ferment the sugars in nectar.
In the first large-scale survey of its kind, ethanol was detected in nectar samples from 26 out of 29 plant species studied. While most levels were extremely low, one sample reached about 0.056% ethanol roughly equivalent to one-tenth of a proof alcoholic beverage.
The Anna’s hummingbird, a species commonly found along the Pacific coast, consumes astonishing amounts of nectar up to 150% of its body weight daily. Based on this, researchers estimate these birds ingest about 0.2 grams of ethanol per kilogram of body weight each day.
For comparison, that’s roughly similar to a human having one standard alcoholic drink spread out over a day.
Despite this intake, neither bees nor hummingbirds show obvious signs of intoxication. One reason may be the slow, continuous way they consume nectar, preventing alcohol from building up in their systems.
In fact, earlier studies suggest hummingbirds will tolerate sugar water with up to 1% alcohol, but begin avoiding it at higher concentrations, indicating a built-in limit.
Nectar isn’t just sweet it can also contain compounds like caffeine and nicotine, known to influence animal behavior. Scientists now believe ethanol could have its own subtle effects, possibly influencing feeding patterns or pollination behavior.
