Bumblebees visit hundreds of flowers every single day, which means they have to make hundreds of fast decisions in a row about exactly where to land next. Scientists have long wondered how a creature with such a tiny brain manages to do this so efficiently, and a new study from researchers in Germany has finally cracked the code. It turns out bumblebees use the same kind of mental shortcut that humans rely on every day without even realizing it: lock onto the single most obvious clue available and ignore everything else completely until that clue stops working reliably. For bees buzzing through a garden, that clue is almost always color, which can be spotted from a good distance before shape or pattern even comes into focus.
Researchers tested this by placing bumblebees in a controlled flight arena filled with artificial flowers, where certain colors led to a sugar reward and others led to plain water. When the color differences between flowers were bold and easy to read, the bees locked onto color alone and ignored every other detail completely, even when distinctive shapes and patterns were placed right in front of them at the same time. But when the colors became so similar that they were difficult to tell apart, something interesting happened: the bees expanded their strategy and began factoring in shape and pattern as backup clues to help guide their final choice. Scientists noted that this flexible approach mirrors the mental shortcuts humans use when picking ripe fruit at the grocery store or quickly scanning labels on a crowded shelf. The research, published in the journal Science Advances, suggests that smart, efficient thinking may have far less to do with brain size and far more to do with having exactly the right strategy at exactly the right moment.
Source: https://www.earth.com/news/bumblebees-take-mental-shortcuts-when-deciding-which-flowers-to-visit/
