By Susan Milius
Honeybees know a thing or two, or three. Even when tricky scientists make those things look different.
Teach a honeybee to recognize two blue dots and she can then find two star or lemon icons or even a mixed picture of a lemon and a flowerlike purple blob, says a new study.
Bees can use their visual sense of number to generalize from one kind of image to another, says Shaowu Zhang at the Australian National University in Canberra.