Credit: Dr Elisa Rigosi, Lund University.
The visual acuity of honey bees in natural (light) conditions: even if the bee cannot see an object clearly, a single photoreceptor can detect a black moving stimulus that is only 0.6° x 0.6° wide. This means if the bee's head was as big as the one depicted here, the moving stimulus would be as small as the one that is moving on the left (yes, look carefully, there’s something!)