The number of facets varies from 3,000 to 6,000 in the queen and worker and as many as 13,000 in the drone. Behind each facet is a lens reaching down to the retina. Because of it's construction, the retina cannot form an image but receives a mosaic of dots of varying intensities. Vision by human standards is poor, but detection of movement is excellent. Bees cannot focus their eyes because the eyes have no pupils.
Bees can distinguish colours, their best vision is at the ultra violet end of the spectrum.
The head also has two long feelers or antennae with which the bee can sense, touch, taste and smell. The bees tongue is a flexible tube which it uses to suck water and nectar into its mouth. The Thorax carries two pairs of wings. The front pair is bigger than the hind pair and the two wings of each side are hooked together. The bee has three pairs of legs.