The researchers trained bees to visit two sugar feeders in different locations, each about 150 feet from the hive.
Elisabeth watched as a bee visited each of the flowers in turn, slowly, carefully, taking its time.
For example, oligolectic bees visit a small number of flowers for pollen.
A bee will visit 100-1000 flowers per trip from the hive.
She found that the bees only visited the feeding station at trained time, even when the sugar water was removed.
On the other hand, if they have color vision, then the bees visit only the blue card, as it is visually distinct from the other cards.
A single hornfaced bee can visit 15 flowers in a minute.
When a bee visits a flower, the charge deposited on the flower takes a while to leak away into the ground.
The genus is hermaphroditic, having apetalous perfect flowers which are mostly wind-pollinated, although bees do visit them.
Adult butterflies, hoverflies, native bees, small beetles and grasshoppers visit the flower heads.
