Scientists just found that honey bees follow their own personal flight paths, and in a German farm landscape, some repeated the same route within centimeters because landmarks like trees seem to keep them locked on course

If you have a certain route you take to the subway every morning, or a coffee shop you always stop at even when it’s not the most efficient route, you may have more in common with a honeybee than you realize.

According to a study published in Current Biology, individual honeybees fly the same route between their hive and a food source over and over again, sometimes within just a few centimeters of where they flew on the previous trip. Researchers at the University of Freiburg in Germany used drones to observe this behavior, and the results are changing scientists’ thinking about insect navigation.

How scientists tracked bees on their daily commute
According to the same study, a team of researchers led by Andrew Straw, a neurobiologist and behavioral biologist, set up a food source about 120 meters from a hive in an agricultural landscape near Kaiserstuhl, Germany, where hedges, a cornfield, and a tree were scattered about, with the tree directly between the hive and the food, blocking any straight-line route.


Using Fast Lock-On (FLO) Tracking, a technique developed in Straw’s lab, researchers tracked individual bees. Every bee is tagged with a tiny reflective marker. A computer aboard a drone locks onto that marker and tracks the bee’s 3D position in real time, within milliseconds. As Straw explained, this is the first time anyone has captured this level of detailed, high-resolution 3D flight data from bees flying through a real, natural landscape.

The data, which included 255 individual flights, revealed that bees not only tended to go in the right direction; their outbound and return paths were almost exactly the same, sometimes just centimeters away from where they had flown before.

Trees work like street signs; cornfields do not
Results showed that bees were not equally accurate throughout. They flew in paths strikingly similar near the tree. But there was nothing distinctive to look at over the open cornfield, and their paths varied much more. Straw and colleagues concluded that visual landmarks help bees navigate and that uncertainty increases in more visually monotonous environments.

That's consistent with what most of us already know from driving around an unfamiliar city. A distinctive building or a corner tree gives your brain something to hold onto, while a stretch of identical road makes it easier to get lost.

The famous waggle dance isn't as accurate as it looks
This research also puts a new spin on something scientists have known for decades: the honeybee waggle dance, the behavior bees use to tell each other where food is, is not perfectly precise. According to Straw, for a food source some 100 meters away, the directional information in the dance can be off by around 30 degrees.

That inaccuracy was first measured by radar tracking two decades ago. In a 2005 study published in Nature, researchers used harmonic radar to track bees recruited by the waggle dance and found that, while the accuracy of the dance’s direction had definite limits, bees still generally found their way to food sources.

The new Freiburg research suggests that the fuzziness in the dance is not because bees are bad navigators. It is the opposite. Bee that fly to places they already know how to get to are surprisingly accurate on their own, even if the secondhand directions they give each other are a bit vague. In other words, bees are better at following their own memory than they are at translating that memory into a dance routine other bees can interpret exactly.

Bees may be carrying a kind of mental map
According to a study published in the Proceedings of the National Academy of Sciences, researchers tracked displaced bees with radar and found evidence that bees use something like an internal map, not just a learned sequence of turns. Such a flexible memory would go a long way towards explaining how a bee can be so loyal to a favorite route and still find its way home if something knocks it off course.

Why this matters beyond the hive
Aside from what it means for bee biology, all of this feels strangely familiar. One might assume that insects function on pure instinct, doing the same generic thing every time with little individual variation. But this research suggests that every bee develops its own individual habits, shaped by its own experience of a particular landscape, much like how a person settles into a particular commute over time.

As Straw puts it, after watching bees repeat their individual flight paths down to the centimeter, “you could almost say each bee has its own personality.” That’s a pretty impressive daily commute for an insect with a brain the size of a sesame seed.