Greenfingers' intriguing blog about horse chestnut flowers changing colour after pollination (http://cabinetofcuriosities-greenfingers.blogspot.com/) set me thinking about which other flowers leave tell-tale signs that they've been visited. Gorse sprang to mind and so I had a closer look today while smelling a fabulous show of blossom at Ford Moss, in North Northumberland.
The left hand flower above remains untouched but the one on the right has been had. As the bee pushes its way into the flower, the trigger is released and the bee gets zapped with pollen. Clever stuff. Question is.. how does this spring mechanism work?