There are herbs growing in flower boxes at the bus stop, raspberry canes on waste land, cabbages in the flower beds at the local park - and even beans between the graves in the local cemetery.
The scientists saw that, if these flower-discs were set at a tricky upright angle, the bees much preferred to land on the ones with conical surface cells.
It showed traditional orchards had been reduced by 67%, flower-rich grassland reduced by 83% and ancient woodland reduced by 78% while arable land had increased by 832%.