Tracking bees with radar

The flight patterns of bees have been studied for over 100 years, but due t o their small size, bees can only be tracked by eye for a very short distan ce from the nest or hive. Scientists have employed various techniques, incl uding mark-recapture(5), feeder experiments(26), homing experiments(23) and the interpretation of bee dances(25), to investigate bee foraging ranges. There is, however, still little detailed information about flight patterns between nest and forage sites, or about the behaviour involved in learning the features of the landscape. The adaptation of radar techniques for use i n entomological research, has allowed insect flight paths to be accurately and continuously tracked over much greater distances. This article summariz es: the progress made in applying radar to bee studies, and suggests some p ossibilities for the future.