Can Hummingbirds Fly Backwards? What the Research Actually Shows

"Hummingbirds are the only bird that can fly backwards" shows up on nearly every hummingbird facts page that exists, stated flatly and left there, as if the interesting part were the yes-or-no answer. It isn't. The genuinely interesting finding, missing from almost everything currently ranking for this question, is what a real wind-tunnel study found when researchers actually measured what backward flight costs a hummingbird's body. It's not what most people would guess.

Yes, and It's Not a Rare Trick

The short answer is yes, and it isn't a strained, occasional stunt. Backward flight is a routine part of how a hummingbird feeds, used every time it backs away from a flower after drinking rather than turning around inside dense foliage where there may not be room to turn. Audubon lists it among a small set of flight capabilities that set hummingbirds apart, describing a bird that "can fly straight up and down. Backwards and forwards. Or upside down." The backward and upside-down maneuvers in particular are close to unheard of among birds generally, which is exactly why the claim gets repeated so often. The part usually missing is any real explanation of what makes it possible or what it actually costs the bird to do.

What "the Only Bird" Claim Gets Right, and Where It Gets Fuzzy

Most sources state this as an absolute: hummingbirds are the only bird capable of flying backwards, full stop. That version turns out to be harder to verify than it sounds. Several sources online claim other birds, flycatchers, warblers, herons, are named inconsistently depending on which site is asked, can drift backward briefly, but none of the versions found during research for this article traced back to an actual study, and no two sources agreed on which species supposedly does it. That's a real reason for caution rather than repetition. Birdorable, in its own myth-busting piece on this exact question, chooses careful language for a reason, describing backward flight as "a remarkable skill that sets them apart from almost all other bird species" rather than claiming an absolute. That's a more honest way to state it: hummingbirds are, at minimum, exceptionally rare among birds in flying backward as a controlled, everyday maneuver, whether or not some other bird can also manage a brief, uncontrolled version of it under specific conditions.

The Study Almost Nobody Cites

Researchers Nir Sapir and Robert Dudley put Anna's Hummingbirds through a wind tunnel and directly measured what backward flight costs, publishing the results in a 2012 study in the Journal of Experimental Biology. Comparing backward flight, forward flight, and hovering at matched airspeed, they measured the metabolic power required for each: 1.280 watts for backward flight, 1.542 watts for hovering, and 1.211 watts for forward flight. In plain terms, flying backward cost the birds about 20 percent less than simply hovering in place, landing close to forward flight's cost rather than somewhere above it. That's the opposite of what most people would assume about a maneuver that gets treated as a rare stunt: it isn't an expensive trick layered on top of normal flight, it's a comparatively efficient one.

The kinematics behind it are genuinely different from hovering, not just hovering run in reverse. The study measured a body angle of roughly 70.6 degrees during backward flight, compared to about 37.6 degrees during forward flight, a much steeper, more upright posture. Wingbeat frequency ran higher during backward flight than forward flight, and the stroke plane, the angle the wings trace through the air, flattened out compared to forward flight, along with a higher upstroke-to-downstroke ratio than the pattern seen going forward. Put together, a hummingbird flying backward isn't doing the same wing motion in reverse; it's making a distinct set of postural and stroke adjustments to pull it off. Our guide to hummingbird wing speed covers the shared anatomical foundation that makes any of this possible in the first place, the shoulder-only wing joint that gives hummingbirds a much wider range of rotational motion than most birds; this article is specifically about what changes when the direction of travel reverses, not a restatement of that broader mechanism.

Why This Ability Exists in the First Place

Sapir and Dudley connect their findings to a specific, practical explanation rather than leaving it as an isolated trick. They propose that backward flight, used to retreat from a flower after feeding, is one of several adaptations that let hummingbirds sustain what they term "strictly aerial nectarivory," feeding entirely on the wing rather than landing to drink. A bird that can back cleanly out of a tight cluster of blooms without needing to turn around, and can do it at a lower energetic cost than simply hovering, gains a real efficiency advantage over a feeding style that required landing, turning, and taking off again at every flower. It's a tidy example of a seemingly show-off ability turning out to serve an ordinary, everyday need.

It's worth sitting with why this particular finding rarely makes it past the trivia-page version of the story. "Hummingbirds can fly backwards" is a fact that fits in one sentence and photographs well, so it gets repeated on its own. "Backward flight costs 20 percent less than hovering, uses a steeper body angle, and exists specifically to support a feeding style with no landing gear at all" is a more complete answer, but it takes a full study to arrive at, which is exactly why almost nothing currently ranking for this question actually cites one. The one-sentence version isn't wrong. It's just missing the part that explains why the ability exists at all, rather than just that it does.

How This Compares to Backward Flight Elsewhere in Nature

True, controlled backward flight is rare enough among animals generally that it's worth asking what else can actually do it. Among vertebrates the list is vanishingly short, but insects offer a genuine comparison point. Per Smithsonian Magazine, dragonflies can also "fly straight up and down, move forward and backward, hover like a helicopter," citing a 2018 study's finding that they pull off backward flight by angling their bodies "vertically, at a 90-degree angle to the horizon." That's a strikingly similar-sounding trick to what Sapir and Dudley measured in hummingbirds, a steep, non-forward-flight body posture as the key to reversing direction, even though a dragonfly's four independently controlled wings and a hummingbird's shoulder-driven wingbeat are entirely different flight systems arriving at a related solution from opposite directions in the animal kingdom.

The comparison also sharpens what makes the hummingbird case notable in the first place. Dragonflies belong to a lineage built around exceptional aerial maneuverability from the start, with wings that move independently of each other and give them a degree of in-flight control most animals simply don't have. A hummingbird pulls off something functionally similar with a body plan built primarily for hovering at flowers, not general-purpose aerobatics, which is a large part of why backward flight in a bird reads as so much more surprising than the same basic ability in an insect that was, in a sense, already built for it.