Editing Bee learning and communication (section)

====Timing in color learning====
In still other experiments, Menzel explored the timing of bee color learning by testing whether bees register color before, during, or after receiving their sugar-water reward. For this purpose Menzel displayed the color beneath a rewarded dish at different stages of the honey bee feeding process: during approach, feeding and departure.<ref name="Carew2000"/>

Menzel found that bees register color during both approach and feeding, and that they had to see the color for about a total of about 5 seconds, with best performance usually coming with about three seconds exposure during the approach and two seconds after landing and beginning to feed.<ref name="Menzel1991">Menzel, R. and Backhaus, W. 1991. Colour Vision in Insects. In P. Gouras (ed): Vision and Visual Dysfunction. The Perception of Colour. London: MacMillan Press, 262-288.</ref>