Incredible bees: they can count and process complex digital information

Bees may well know how to count: a new study reveals real numerical abilities that go beyond simple recognition of visual patterns.

Honey bees may be a lot smarter than we thought. A new series of international studies lends credence to the hypothesis that these insects not only react to simple visual stimuli, but are also capable of processing real digital information. The study, published in the journal Proceedings of the Royal Society B: Biological Sciences, is the result of joint work by the University of Trento and Monash University, led by neuroscientists Mirko Zanon and Giorgio Vallortigara, and zoologist Scarlett Howard.

The experiment that reignited the debate

The central question is based on a scientific doubt that has persisted for years: can bees really "count", or do they merely recognize repetitive visual patterns? In previous experiments, insects were presented with symbols and graphic configurations associated with numbers.

The bees were trained to associate quantities with artificial signs, achieving 75-80% accuracy, falling to 60-65% in the most complex tests. These results are better than mere chance, but not enough to convince everyone. A later critic even reversed the interpretation of the data, arguing that the bees relied only on visual patterns and not on real number perception.

The breakthrough: seeing the world through the eyes of a bee

The new study changes perspective: the scientists re-analyzed the visual stimuli used in these experiments, but this time using a model that simulates the sensory perception of bees, taking into account their limited visual acuity.

The result was surprising: when the stimuli are observed "with the eyes of a bee", a sensitivity to numerical quantities clearly appears, and not just to graphic details. In other words, bees don't just rely on shapes and contrasts, but actually recognize the number of elements.

More complex cognition than previously thought

For researchers, this changes the way animal intelligence is studied. As the scientific community involved points out, ignoring the sensory perspective of species can lead to biased conclusions. The key issue is therefore one of method: to truly understand the cognitive capacities of animals, we need to design experiments that respect the way they perceive the world.

These discoveries form part of an already astonishing picture: bees are capable of complex communication, spatial memory and advanced associative learning. To this list is now added the possible ability to process numbers. A detail that fascinates researchers, but also raises new questions about the boundary between instinct and cognition, even in the smallest life forms.

Source : Monash University / The Royal Society