Bumblebees outwit robotic spiders :

Scientists have found that bumblebees learn from their "near-death" encounters with crab spiders and adapt their future foraging strategies.
They watched real bees in an artificial meadow - containing yellow "flowers" and robotic crab spiders.
Bees that had been "captured" spent longer inspecting flowers during subsequent foraging trips.
They may outwit the spiders - but at the expense of valuable foraging time, Current Biology reports.
Crab spiders lie in wait on flowers, ready to ambush their "most prized prey" - the bumblebee.