Bees transfer charge to flowers they visit. The insects are capable of detecting weak electric fields with mechanosensory hairs. Flowers can have fields of 5 kV/m in a region 2-3 cm from the plant. Bees may use the field to assess if flowers are worth visiting.
Read more here: https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5599473/">https://www.ncbi.nlm.nih.gov/pmc/artic...